Revision as of 09:27, 19 November 2019

Welcome to Pgpool Wiki!

What is Pgpool-II?

Pgpool-II is a middleware that works between PostgreSQL servers and a PostgreSQL database client. It is licensed under BSD license. It provides the following features.

Connection Pooling

Pgpool-II saves connections to the PostgreSQL servers, and reuse them whenever a new connection with the same properties (i.e. username, database, protocol version) comes in. It reduces connection overhead, and improves system's overall throughput.

Replication

Pgpool-II can manage multiple PostgreSQL servers. Using the replication function enables creating a realtime backup on 2 or more physical disks, so that the service can continue without stopping servers in case of a disk failure.

Load Balancing

If a database is replicated, executing a SELECT query on any server will return the same result. Pgpool-II takes an advantage of the replication feature to reduce the load on each PostgreSQL server by distributing SELECT queries among multiple servers, improving system's overall throughput. At best, performance improves proportionally to the number of PostgreSQL servers. Load balance works best in a situation where there are a lot of users executing many queries at the same time.

Limiting Exceeding Connections

There is a limit on the maximum number of concurrent connections with PostgreSQL, and connections are rejected after this many connections. Setting the maximum number of connections, however, increases resource consumption and affect system performance. pgpool-II also has a limit on the maximum number of connections, but extra connections will be queued instead of returning an error immediately.

Watchdog

Watchdog can coordinate multiple Pgpool-II, create a robust cluster system and avoid the single point of failure or split brain. Watchdog can perform lifecheck against other pgpool-II nodes, to detect a fault of Pgpoll-II. If active Pgpool-II goes down, standby Pgpool-II can be promoted to active, and take over Virtual IP.

In Memory Query Cache

In memory query cache allows to save a pair of SELECT statement and its result. If an identical SELECTs comes in, Pgpool-II returns the value from cache. Since no SQL parsing nor access to PostgreSQL are involved, using in memory cache is extremely fast. On the other hand, it might be slower than the normal path in some cases, because it adds some overhead of storing cache data.

Pgpool-II speaks PostgreSQL's backend and frontend protocol, and relays messages between a backend and a frontend. Therefore, a database application (frontend) thinks that Pgpool-II is the actual PostgreSQL server, and the server (backend) sees Pgpool-II as one of its clients. Because Pgpool-II is transparent to both the server and the client, an existing database application can be used with Pgpool-II almost without a

Pgpool-II talks PostgreSQL's backend and frontend protocol, and relays a connection between them. Therefore, a database application (frontend) thinks that Pgpool-II is the actual PostgreSQL server, and the server (backend) sees Pgpool-II as one of its clients. Because Pgpool-II is transparent to both the server and the client, an existing database application can be used with Pgpool-II almost without a change to its sources.

Pgpool-II License

See License.

Stable versions

Pgpool-II: 4.0, 3.7, 3.6, 3.5, 3.4
pgpoolAdmin: 4.0, 3.7, 3.6, 3.5, 3.4

Contacts

If you have technical questions regarding Pgpool-II, please subscribe Pgpool-II mailing lists and send questions to it (pgpool-general will be a starter). Please do not send technical questions via private email. We will not respond such that messages.

If you believe that you found a vulnerability/security issues with Pgpool-II, please send a private email to ishii at sraoss.co.jp (he is the project leader).

What's new

News

Pgpool-II 4.1.0, 4.0.7, 3.7.12, 3.6.19, 3.5.23 and 3.4.26 RPMs Update 2 officially released (2019/11/19)

Pgpool-II 4.1.0, 4.0.7, 3.7.12, 3.6.19, 3.5.23 and 3.4.26 RPMs Update 2 are officially released. The updated RPM packages fixed the bug which logs are not output, when log_destination = 'syslog' is configured.

You can download them here.

Events

PostgreSQL Conference in Russia 2016

Tatsuo gave a talk "How to manage a herd of elephants" at "PostgreSQL Conference in Russia 2016", held in Moscow from February 4th to 5th. The slides are available in Developer's documentation.

PostgreSQL Conference in China 2015

Tatsuo gave a talk "How to manage a herd of elephants" at "PostgreSQL Conference in China 2015", held in Beijing from November 21th to 22th. The slides are available in Developer's documentation.

pgCon 2015 Cluster Hacker Summit

We participated "6th Postgres Cluster Hacker Summit" which was held as a part of PgCon 2015 Developer Unconference. We reported about Development Status Updates and pgpool-II 3.5 features. The slides are available in Developer's documentation.

Pgpool-II Day 2015 in Tokyo

We had the very first time pgpool-II decicated conference. See the event report.

New docs

pgpool-II 3.5 is coming soon!

pgpool-II 3.5 alpha1 has been out. Tatsuo introduces "new features of pgpool-II 3.5."

Stable

Pgpool-II 4.1.0, 4.0.7, 3.7.12, 3.6.19, 3.5.23 and 3.4.26 RPMs Update 2 officially released (2019/11/19)

Pgpool-II 4.1.0, 4.0.7, 3.7.12, 3.6.19, 3.5.23 and 3.4.26 RPMs Update 2 are officially released. The updated RPM packages fixed the bug which logs are not output, when log_destination = 'syslog' is configured.

You can download them here.

Pgpool-II 4.1.0 released (2019/10/31)

Pgpool-II 4.1.0 is now relased.

Major enhancements in Pgpool-II 4.1 include:

Statement level load balancing.
Auto failback.
Enhance performance in number of areas.
- Shared relation cache allows to reuse relation cache among sessions to reduce internal queries against PostgreSQL system catalogs.
- Have separate SQL parser for DML statements to eliminate unnecessary parsing effort.
- Load balancing control for specific queries.
Reduce Internal Queries against System Catalogs.
Import PostgreSQL 12 SQL parser.
etc.

You can download it from here.

Release notes: English Japanese

Pgpool-II 4.0.7, 3.7.12, 3.6.19, 3.5.23 and 3.4.26 officially released (2019/10/31)

Pgpool-II 4.0.7, 3.7.12, 3.6.19, 3.5.23 and 3.4.26 officially released

Please note that 3.4.26 is the last release of 3.4 series because 5 years has passed since 3.4 was out (2014/11).

You can download them here.

4.0.7 : English Japanese
3.7.12 : English Japanese
3.6.19 : English Japanese
3.5.23 : English Japanese
3.4.26: English Japanese

Pgpool-II 4.0.6, 3.7.11, 3.6.18, 3.5.22 and 3.4.25 officially released (2019/08/15)

Pgpool-II 4.0.6, 3.7.11, 3.6.18, 3.5.22 and 3.4.25 officially released

You can download them here.

4.0.6 : English Japanese
3.7.11 : English Japanese
3.6.18 : English Japanese
3.5.22 : English Japanese
3.4.25: English Japanese

Pgpool-II 4.0.5, 3.7.10, 3.6.17, 3.5.21 and 3.4.24 officially released (2019/05/16)

Pgpool-II 4.0.5, 3.7.10, 3.6.17, 3.5.21 and 3.4.24 officially released

You can download them here.

4.0.5 : English Japanese
3.7.10 : English Japanese
3.6.17 : English Japanese
3.5.21 : English Japanese
3.4.24: English Japanese

Pgpool-II 4.0.4, 3.7.9, 3.6.16, 3.5.20 and 3.4.23 officially released (2019/03/29)

Pgpool-II 4.0.4, 3.7.9, 3.6.16, 3.5.20 and 3.4.23 officially released

You can download them here.

4.0.4 : English Japanese
3.7.9 : English Japanese
3.6.16 : English Japanese
3.5.20 : English Japanese
3.4.23: English Japanese

Pgpool-II 4.0.3, 3.7.8, 3.6.15, 3.5.19 and 3.4.22 officially released (2019/02/21)

Pgpool-II 4.0.3, 3.7.8, 3.6.15, 3.5.19 and 3.4.22 officially released

You can download them here.

4.0.3 : English Japanese
3.7.8 : English Japanese
3.6.15 : English Japanese
3.5.19 : English Japanese
3.4.22: English Japanese

pgpoolAdmin 4.0.1 officially released (2018/12/20)

PgPool Global Development Group has released a Security Update of pgpoolAdmin.

The purpose of this release is to address CVE-2018-16203, which allow an attacker to login without properly checking the authorization. Once getting into gpoolAdmin, the attacker can control Pgpool-II. Also it may be possible to obtain the superuser role of a PostgreSQL database.

This vulnability affects all versions of pgpoolAdmin. We recommend upgrade pgpoolAdmin to 4.0.1 immediately (remember that PgpoolAdmin 4.0.1 is compatible with Pgpool-II 3.4 or later).

PgPool Global Development Group would like to thank Fotios Rogkotis of DarkMatter for finding the security issue and giving us the detailed studies on it.

You can download them here.

Pgpool-II 4.0.2, 3.7.7, 3.6.14, 3.5.18 and 3.4.21 officially released (2018/11/22)

Pgpool-II 4.0.2, 3.7.7, 3.6.14, 3.5.18 and 3.4.21 officially released

You can download them here.

4.0.2 : English Japanese
3.7.7 : English Japanese
3.6.14 : English Japanese
3.5.18 : English Japanese
3.4.21: English Japanese

Pgpool-II 4.0.1, 3.7.6, 3.6.13, 3.5.17 and 3.4.20 officially released (2018/10/31)

Pgpool-II 4.0.1, 3.7.6, 3.6.13, 3.5.17 and 3.4.20 officially released

You can download them here.

4.0.1 : English Japanese
3.7.6 : English Japanese
3.6.13 : English Japanese
3.5.17 : English Japanese
3.4.20: English Japanese

Pgpool-II 4.0.0 and pgpoolAdmin 4.0.0 officially released (2018/10/19)

Pgpool-II 4.0.0 and pgpoolAdmin 4.0.0 are now relased.

V4.0 has new features:

Add SCRAM and Certificate authentication support.
Detecting "false" primary server of PostgreSQL.
Improvements to load balancing:
- More load balancing fine control after write queries.
- Load balancing control for specific queries.
- Allow to specify load balance weight ratio for load balance parameters.
Add last state change timestamp to SHOW POOL NODES.
Import PostgreSQL 11 SQL parser.
Logging client messages.
etc.

You can download it from here.

Release notes: English Japanese

Pgpool-II 3.7.5, 3.6.12, 3.5.16, 3.4.19 and 3.3.22 officially released (2018/07/31)

Pgpool-II 3.7.5, 3.6.12, 3.5.16, 3.4.19 and 3.3.22 officially released

You can download them here.

3.7.5 : English Japanese
3.6.12 : English Japanese
3.5.16 : English Japanese
3.4.19: English Japanese
3.3.22: English Japanese

Please note that 3.3.22 is the last release of 3.3 series because 5 years has passed since 3.3 was out (2013/07/30).

Pgpool-II 3.7.4, 3.6.11, 3.5.15 and 3.4.18 officially released (2018/06/12)

Pgpool-II 3.7.4, 3.6.11, 3.5.15 and 3.4.18 officially released

You can download them here.

3.7.4 : English Japanese
3.6.11 : English Japanese
3.5.15 : English Japanese
3.4.18: English Japanese

Pgpool-II 3.7.3, 3.6.10, 3.5.14, 3.4.17 and 3.3.21 officially released (2018/04/17)

Pgpool-II 3.7.3, 3.6.10, 3.5.14, 3.4.17 and 3.3.21 officially released

You can download them here.

3.7.3 : English Japanese
3.6.10 : English Japanese
3.5.14 : English Japanese
3.4.17: English Japanese
3.3.21: English Japanese

Pgpool-II 3.7.2-2 RPMs are released. (2018/03/14)

Pgpool-II 3.7.2-2 RPMs are released.

You can download them here.

Pgpool-II 3.7.2, 3.6.9, 3.5.13, 3.4.16 and 3.3.20 officially released (2018/02/13)

Pgpool-II 3.7.2, 3.6.9, 3.5.13, 3.4.16 and 3.3.20 officially released

You can download them here.

3.7.2 : English Japanese
3.6.9 : English Japanese
3.5.13 : English Japanese
3.4.16: English Japanese
3.3.20: English Japanese

pgpoolAdmin 3.7.1 officially released (2018/02/05)

pgpoolAdmin 3.7.1 is officially released.

You can download them here.

Release notes

Pgpool-II 3.7.1, 3.6.8, 3.5.12, 3.4.15 and 3.3.19 officially released (2018/01/09)

Pgpool-II 3.7.1, 3.6.8, 3.5.12, 3.4.15 and 3.3.19 officially released

You can download them here.

3.7.1 : English Japanese
3.6.8 : English Japanese
3.5.12 : English Japanese
3.4.15: English Japanese
3.3.19: English Japanese

Pgpool-II 3.7.0 and pgpoolAdmin 3.7.0 officially released (2017/11/22)

Pgpool-II 3.7.0 and pgpoolAdmin 3.7.0 are now relased.

V3.7 has new features:

Quorum aware failover feature.
Allow specifying the hostnames in pool_hba.
Allow to specify per node health check parameters.
Support AWS Aurora.
Import PostgreSQL 10 SQL parser.
Support logical replication.
etc.

You can download them here.

Release notes: English Japanese

Pgpool-II 3.6.7, 3.5.11, 3.4.14 and 3.3.18 officially released (2017/11/01)

Pgpool-II 3.6.7, 3.5.11, 3.4.14 and 3.3.18 officially released

You can download them here.

3.6.7 : English Japanese
3.5.11 : English Japanese
3.4.14: English Japanese
3.3.18: English Japanese

Pgpool-II 3.6.6, 3.5.10, 3.4.13, 3.3.17 and 3.2.22 officially released (2017/09/05)

Pgpool-II 3.6.6, 3.5.10, 3.4.13, 3.3.17, 3.2.22 and pgpoolAdmin 3.6.2 officially released

You can download them here.

3.6.6 : English Japanese
3.5.10 : English Japanese
3.4.13: English Japanese
3.3.17: English Japanese
3.2.22: English Japanese

Pgpool-II 3.6.5, 3.5.9, 3.4.12, 3.3.16 and 3.2.21 officially released (2017/07/11)

Pgpool-II 3.6.5, 3.5.9, 3.4.12, 3.3.16 and 3.2.21 officially released

You can download them here.

3.6.5 : English Japanese
3.5.9 : English Japanese
3.4.12: English Japanese
3.3.16: English Japanese
3.2.21: English Japanese

Pgpool-II 3.6.4, 3.5.8 officially released (2017/05/11)

Pgpool-II 3.6.4, 3.5.8 officially released

You can download them here.

3.6.4: English Japanese
3.5.8: English Japanese

Pgpool-II 3.6.3, 3.5.7, 3.4.11, 3.3.15, 3.2.20 and pgpoolAdmin 3.6.1 officially released (2017/04/28)

Pgpool-II 3.6.3, 3.5.7, 3.4.11, 3.3.15, 3.2.20 and pgpoolAdmin 3.6.1 officially released

You can download them here.

3.6.3: English Japanese
3.5.7: English Japanese
3.4.11: English Japanese
3.3.15: English Japanese
3.2.20: English Japanese

Pgpool-II 3.6.2, 3.5.6, 3.4.10, 3.3.14 and 3.2.19 officially released (2017/03/17)

Pgpool-II 3.6.2, 3.5.6, 3.4.10, 3.3.14 and 3.2.19 officially released

You can download them here.

3.6.2: English Japanese
3.5.6: English Japanese
3.4.10: English Japanese
3.3.14: English Japanese
3.2.19: English Japanese

pgpoolAdmin 3.6.0 officially released (2017/02/28)

pgpoolAdmin 3.6.0 is officially released.

You can download them here.

pgpool-II 3.6.1, 3.5.5, 3.4.9, 3.3.13, 3.2.18 and 3.1.21 officially released (2016/12/26)

These are the latest stable versions of each major branches.

You can download them here.

3.6.1: English Japanese
3.5.5: English Japanese
3.4.9: English Japanese
3.3.13: English Japanese
3.2.18: English Japanese
3.1.21: English Japanese

pgpool-II 3.1.21 is the final release of the 3.1.x. This series has reached "End of Life", and is no longer maintained and does not receive any updates.

pgpool-II 3.6.0 officially released (2016/11/21)

Pgpool-II 3.6.0 is now officially released.

You can download them here.

V3.6's new features are:

Improve the behavior of fail-over.
New PGPOOL SET command has been introduced.
Watchdog is significantly enhanced.
Handling of extended query protocol (e.g. used by Java applications) in streaming replication mode speeds up if many rows are returned in a result set.
Import parser of PostgreSQL 9.6.
In some cases pg_terminate_backend() now does not trigger a fail-over.
Change documentation format from raw HTML to SGML.
etc.

pgpool-II 3.5.4, 3.4.8, 3.3.12, 3.2.17 and 3.1.20 officially released (2016/08/31)

These are the latest stable versions of each major branches.

You can download them here.

3.5.4: English Japanese
3.4.8: English Japanese
3.3.12: English Japanese
3.2.17: English Japanese
3.1.20: English Japanese

pgpool-II 3.5.3, 3.4.7, 3.3.11, 3.2.16, 3.1.19, and pgpoolAdmin 3.5.3 officially released (2016/06/17)

These are the latest stable versions of each major branches.

You can download them here.

3.5.3: English Japanese
3.4.7: English Japanese
3.3.11: English Japanese
3.2.16: English Japanese
3.1.19: English Japanese

pgpool-II 3.5.2, 3.4.6, 3.3.10, 3.2.15, 3.1.18, and pgpoolAdmin 3.5.2 officially released (2016/04/26)

These are the latest stable versions of each major branches.

You can download them here.

3.5.2: English Japanese
3.4.6: English Japanese
3.3.10: English Japanese
3.2.15: English Japanese
3.1.18: English Japanese

pgpool-II 3.5.1, 3.4.5, 3.3.9, 3.2.14, 3.1.17, and pgpoolAdmin 3.5.1 officially released (2016/04/04)

These are the latest stable versions of each major branches.

You can download them here.

3.5.1: English Japanese
3.4.5: English Japanese
3.3.9: English Japanese
3.2.14: English Japanese
3.1.17: English Japanese

pgpool-II 3.4.4, 3.3.8, 3.2.13, 3.1.16, and 3.0.20 officially released (2016/02/05)

These are the latest stable versions of each major branches.

You can download them here.

3.4.4: English Japanese
3.3.8: English Japanese
3.2.13: English Japanese
3.1.16: English Japanese
3.0.20: English Japanese

pgpool-II 3.0.20 is the final release of the 3.0.x. This series has reached "End of Life", and is no longer maintained and does not receive any updates.

pgpool-II 3.5.0 and pgpoolAdmin 3.5.0 officially released (2016/01/29)

Pgpool-II 3.5.0 and pgpoolAdmin 3.5.0 are now officially released.

You can download them here.

V3.5's new features are:

Improved performance in extended query protocol
Overcoming the thundering herd problem
watchdog feature enhancements to be more robust and adaptable
PCP command enhancements
Import PostgreSQL 9.5 parser
etc.

Please see this for details.

3.5.0 release note: English Japanese

pgpool-II 3.4.3, 3.3.7, 3.2.12, 3.1.15, and 3.0.19 officially released (2015/07/24)

These are the latest stable versions of each major branches.

You can download them here.

3.4.3: English Japanese
3.3.7: English Japanese
3.2.12: English Japanese
3.1.15: English Japanese
3.0.19: English Japanese

pgpool-II 3.4.2, 3.3.6, 3.2.11, 3.1.14, and 3.0.18 officially released (2015/04/08)

These are the latest stable versions of each major branches.

You can download them here.

3.4.2: English Japanese
3.3.6: English Japanese
3.2.11: English Japanese
3.1.14: English Japanese
3.0.18: English Japanese

pgpool-II 3.4.1, 3.3.5, 3.2.10, 3.1.13, 3.0.17 and pgpoolAdmin 3.4.1 officially released (2015/02/05)

These are the latest stable versions of each major branches.

You can download them here.

3.4.1: English Japanese
3.3.5: English Japanese
3.2.10: English Japanese
3.1.13: English Japanese
3.0.17: English Japanese

pgpoolAdmin 3.4.1: English

The pgpool-II official yum repository released (2014/12/16)

PgPool Global Development Group announced the pgpool-II official yum repository. With this repository, you will be able to install or update pgpool-II and pgpoolAdmin etc. by using yum.

http://www.pgpool.net/yum/

The yum repository currently supports pgpool-II 3.3 or above with RHEL6 x86_64.

See Yum Repository for detail.

pgpool-II 3.4.0 and pgpoolAdmin 3.4.0 officially released (2014/11/07)

Pgpool-II 3.4.0 is now officially released.

You can download them here.

V3.4's new features are:

Allow fine control of load balancing by using application name or database name
New features about log output
- Allow to print pgpool-II process names
- Allow to control log verbosity like PostgreSQL
SQL parser compatible with PostgreSQL 9.4
Import PostgreSQL's memory manager and exception manager
Support IPv6 address
Reorganize source code tree
etc.

3.4.0 release note: English Japanese

pgpool-II 3.3.4, 3.2.9, 3.1.12, and 3.0.16 are officially released (2014/09/05)

These are the latest stable versions of each major branches.

You can download them here.

3.3.4: English Japanese
3.2.9: English Japanese
3.1.12: English Japanese
3.0.16: English Japanese

pgpool-ha 2.2 released (2014/04/01)

This is the latest stable version.

You can download them here.

pgpool-II 3.3.3, 3.2.8, 3.1.11, 3.0.15 and pgpoolAdmin 3.3.1 officially released (2014/03/24)

These are the latest stable versions of each major branches.

You can download them here.

3.3.3: English Japanese
3.2.8: English Japanese
3.1.11: English Japanese
3.0.15: English Japanese

pgpoolAdmin 3.3.1: English

pgpool-II 3.2.7, 3.1.10, 3.0.14 officially released (2013/12/06)

These are the latest stable versions of each major branches.

You can download them here.

3.2.7: English Japanese
3.1.10: English Japanese
3.0.14: English Japanese

pgpool-II 3.3.2 officially released (2013/11/29)

These are the latest stable version of 3.3.

You can download them here.

3.3.2: English Japanese

pgpool-II 3.3.1, 3.2.6, 3.1.9, 3.0.13 officially released (2013/09/06)

These are the latest stable versions of each major branches.

You can download them here.

Missing regression test suite in pgpool-II 3.3.0.tar.gz (2013/07/31)

New regression test suite was not accidentally included in the pgpool-II 3.3.0.tar.gz tar ball. You can get it from git repository or download from here.

pgpool-II 3.3 and pgpoolAdmin 3.3 officially released (2013/07/30)

Pgpool-II 3.3 is now officially released.

You can download them here.

V3.3's new features are:

Enhancements for watchdog
- New monitoring method of watchdog lifecheck using heartbeat signal
- Interlocking of failover/failback script
- Secure watchdog communication
- PCP command for retrieving the watchdog status
- etc.
Othres
- Import PostgreSQL 9.2 raw parser
- New pgpool_setup tool
- Support for using CREATE EXTENSION to install pgpool specific extensions
- regression test suit
- etc.

pgpool-II 3.2.5, 3.1.8, 3.0.12 officially released (2013/07/10)

These are the latest stable versions of each major branches.

You can download them here.

Development

Pgpool-II 4.1 RC1 released (2019/10/16)

Pgpool-II 4.1 RC1 is now relased.

This is not intended to be used in production but is close to the release version. So users are encouraged to test it out.

Major enhancements in Pgpool-II 4.1 include:

Statement level load balancing.
Auto failback.
Enhance performance in number of areas.
- Shared relation cache allows to reuse relation cache among sessions to reduce internal queries against PostgreSQL system catalogs.
- Have separate SQL parser for DML statements to eliminate unnecessary parsing effort.
- Load balancing control for specific queries.
Reduce Internal Queries against System Catalogs.
Import PostgreSQL 12 SQL parser.
etc.

You can download it from here.

Release notes: English

Pgpool-II 4.1 beta1 released (2019/09/06)

Pgpool-II 4.1 beta1 is now relased.

This is not a stable version but just for developers.

Major enhancements in Pgpool-II 4.1 include:

Statement level load balancing.
Auto failback.
Enhance performance in number of areas.
- Shared relation cache allows to reuse relation cache among sessions to reduce internal queries against PostgreSQL system catalogs.
- Have separate SQL parser for DML statements to eliminate unnecessary parsing effort.
- Load balancing control for specific queries.
Reduce Internal Queries against System Catalogs.
Import PostgreSQL 12 SQL parser.
etc.

You can download it from here.

Release notes: English

Pgpool-II 4.0 RC1 released (2018/10/03)

Pgpool-II 4.0 RC1 is now relased.

This is not intended to be used in production but is close to the release version. So users are encouraged to test it out.

V4.0 has new features:

Add SCRAM and Certificate authentication support.
Detecting "false" primary server of PostgreSQL.
Improvements to load balancing:
- More load balancing fine control after write queries.
- Load balancing control for specific queries.
- Allow to specify load balance weight ratio for load balance parameters.
Add last state change timestamp to SHOW POOL NODES.
Import PostgreSQL 11 SQL parser.
Logging client messages.
etc.

You can download it from here.

Release notes: English

Pgpool-II 4.0 beta1 released (2018/09/19)

Pgpool-II 4.0 beta1 is now relased.

This is not a stable version but just for developers.

V4.0 has new features:

Add SCRAM and Certificate authentication support.
Detecting "false" primary server of PostgreSQL.
Improvements to load balancing:
- More load balancing fine control after write queries.
- Load balancing control for specific queries.
- Allow to specify load balance weight ratio for load balance parameters.
Add last state change timestamp to SHOW POOL NODES.
Import PostgreSQL 11 SQL parser.
Logging client messages.
etc.

You can download it from here.

Release notes: English

Pgpool-II 4.0 alpha2 released (2018/09/06)

Pgpool-II 4.0 alpha2 is now relased.

This is not a stable version but just for developers.

V4.0 has new features:

Add SCRAM and Certificate authentication support.
Detecting "false" primary server of PostgreSQL.
Improvements to load balancing:
- More load balancing fine control after write queries.
- Load balancing control for specific queries.
- Allow to specify load balance weight ratio for load balance parameters.
Add last state change timestamp to SHOW POOL NODES.
Import PostgreSQL 11 SQL parser.
Logging client messages.
etc.

You can download it from here.

Release notes: English

Pgpool-II 4.0 alpha1 released (2018/08/20)

Pgpool-II 4.0 alpha1 is now relased.

This is not a stable version but just for developers.

V4.0 has new features:

Add SCRAM and Certificate authentication support.
Detecting "false" primary server of PostgreSQL.
Improvements to load balancing:
- More load balancing fine control after write queries.
- Load balancing control for specific queries.
- Allow to specify load balance weight ratio for load balance parameters.
Add last state change timestamp to SHOW POOL NODES.
Logging client messages.
etc.

You can download it from here.

Release notes: English

Pgpool-II 3.7 RC1 and pgpoolAdmin 3.7 RC1 released (2017/11/13)

Pgpool-II 3.7 RC1 and pgpoolAdmin 3.7 RC1 are now relased.

This is not intended to be used in production but is close to the release version. So users are encouraged to test it out.

V3.7 has new features:

Quorum aware failover feature.
Allow specifying the hostnames in pool_hba.
Allow to specify per node health check parameters.
Support AWS Aurora.
Import PostgreSQL 10 SQL parser.
Support logical replication.
etc.

You can download it from here.

Release notes: English Japanese

Pgpool-II 3.7 beta1 released (2017/10/17)

Pgpool-II 3.7 beta1 is now relased. This is not a stable version but just for developers.

V3.7 has new features:

Quorum aware failover feature.
Allow specifying the hostnames in pool_hba.
Allow to specify per node health check parameters.
Support AWS Aurora.
Import PostgreSQL 10 SQL parser.
Support logical replication.
etc.

You can download it from here.

pgpool-II 3.6 RC1 released (2016/11/16)

pgpool-II 3.6 RC1 is now relased. This is not a stable version but just for developers.

You can download it from here.

pgpool-II 3.6 beta2 released (2016/11/08)

pgpool-II 3.6 beta2 is now relased. This is not a stable version but just for developers.

Users are encouraged to take part in our beta test program. Please help us in testing and making pgpool-II 3.6 better!

You can download it from here.

pgpool-II 3.6 beta1 released (2016/11/02)

pgpool-II 3.6 beta1 is now relased. This is not a stable version but just for developers.

Users are encouraged to take part in our beta test program. Please help us in testing and making pgpool-II 3.6 better!

You can download it from here.

Pgpool-II 3.6 alpha1 released (2016/10/19)

Pgpool-II 3.6 alpha1 is now relased. This is not a stable version but just for developers.

V3.6 has a new feature:

Improve the behavior of fail-over.
New PGPOOL SET command has been introduced.
Watchdog is significantly enhanced.
Handling of extended query protocol (e.g. used by Java applications) in streaming replication mode speeds up if many rows are returned in a result set.
Import parser of PostgreSQL 9.6.
In some cases pg_terminate_backend() now does not trigger a fail-over.
Change documentation format from raw HTML to SGML.
etc.

You can download it from here.

pgpool-II 3.5 RC1 released (2016/1/14)

pgpool-II 3.5 RC1 and pgpoolAdmin 3.5 RC1 are now relased. This is not a stable version but just for developers.

You can download it from here.

pgpool-II 3.5 beta1 released (2015/12/14)

pgpool-II 3.5 beta1 and pgpoolAdmin 3.5 beta1 are now relased. This is not a stable version but just for developers.

Users are encouraged to take part in our beta test program. Please help us in testing and making pgpool-II 3.5 better!

You can download it from here.

pgpool-II 3.5 alpha1 released (2015/11/16)

Pgpool-II 3.5 alpha1 is now relased. This is not a stable version but just for developers.

V3.5 has a new feature:

Improved performance in extended query protocol
Overcoming the thundering herd problem
watchdog feature enhancements to be more robust and adaptable
PCP command enhancements
Import PostgreSQL 9.5 parser
etc.

You can download it from here.

pgpool-II 3.3 RC1 released (2013/07/25)

Pgpool-II 3.3 RC1 is now relased. This is not a stable version but just for developers.

You can download it from here.

pgpool-II 3.3 beta1 released (2013/06/12)

Pgpool-II 3.3 beta1 is now relased. This is not a stable version but just for developers.

Users are encouraged to take part in our beta test program. Please help us in testing and making pgpool-II 3.3 better!

You can download it from here.

pgpool-II 3.3 alpha1 released (2013/05/17)

Pgpool-II 3.3 alpha1 is now relased. This is not a stable version but just for developers.

V3.3 has a new feature:

Enhancements for watchdog
- New monitoring method of watchdog lifecheck using heartbeat signal
- Interlocking of failover/failback script
- Secure watchdog communication
- etc.
Othres
- Import PostgreSQL 9.2 raw parser
- New pgpool_setup tool
- Support for using CREATE EXTENSION to install pgpool specific extensions

You can download it from here.

Old

See this page.

Where can I get commercial support for pgpool-II?

Some commercial packages include pgpool-II support. Consulting and annual support can be purchased from SRA OSS, Inc. Japan (http://www.sraoss.co.jp/index_en.php).

@@ Line 1: / Line 1: @@
-Last update: 2019/04/04
+<!--
+'''MediaWiki has been successfully installed.'''
-Each bug items assigned "SL (Severity level)" from 1-3 (1 is the most severe, 3 is the least severe) in "Status" column.
+Consult the [http://meta.wikimedia.org/wiki/Help:Contents User's Guide] for information on using the wiki software.
-{| class="wikitable"
+== Getting started ==
-!
-! ID
+* [http://www.mediawiki.org/wiki/Manual:Configuration_settings Configuration settings list]
-! Registered/start Date
+* [http://www.mediawiki.org/wiki/Manual:FAQ MediaWiki FAQ]
-! Target Date
+* [https://lists.wikimedia.org/mailman/listinfo/mediawiki-announce MediaWiki release mailing list]
-! Priority
+-->
-! Implementation
-! Person in charge
+<!-- MAINTENANCE MESSAGE -->
-! Overview
-! Status
+<!--
-|-style="background:silver"
+<font color="red">
-| <s>001</s>
+'''[!] Server maintenance'''
-| <s>[FEATURE] Cert authentication between Pgpool-II and PostgreSQL</s>
-|
+The pgpool.net server will be shut down for maintenance work
-|
+from 04:00 JST (UTC+0900) to 21:00 JST (UTC+0900), Sat, 16 November 2019.
-|
+All services on pgpool.net will be unavailable for the maintenance period.
-|
+Sorry for inconvenience.
-|
+</font>
-|
+-->
-| Removed from 4.1. 2018/11/29
-|-style="background:beige"
+= Welcome to Pgpool Wiki! =
-| 002
-| [FEATURE] Add new child if it goes down
+== What is Pgpool-II? ==
-| 2015/09/03
-| -
+Pgpool-II is a middleware that works between PostgreSQL servers and a PostgreSQL database client. It is licensed under BSD license. It provides the following features.
-| Low
-| Small
+* '''Connection Pooling'''
-|
+: Pgpool-II saves connections to the PostgreSQL servers, and reuse them whenever a new connection with the same properties (i.e. username, database, protocol version) comes in. It reduces connection overhead, and improves system's overall throughput.
-| pgpool-hackers:1034
-|
+* '''Replication'''
-|- style="background:silver"
+: Pgpool-II can manage multiple PostgreSQL servers. Using the replication function enables creating a realtime backup on 2 or more physical disks, so that the service can continue without stopping servers in case of a disk failure.
-| <s>003</s>
-| <s>[FEATURE] Make PCP set configuration command public </s>
+* '''Load Balancing'''
-|
+: If a database is replicated, executing a SELECT query on any server will return the same result. Pgpool-II takes an advantage of the replication feature to reduce the load on each PostgreSQL server by distributing SELECT queries among multiple servers, improving system's overall throughput. At best, performance improves proportionally to the number of PostgreSQL servers. Load balance works best in a situation where there are a lot of users executing many queries at the same time.
-|
-|
+* '''Limiting Exceeding Connections'''
-|
+: There is a limit on the maximum number of concurrent connections with PostgreSQL, and connections are rejected after this many connections. Setting the maximum number of connections, however, increases resource consumption and affect system performance. pgpool-II also has a limit on the maximum number of connections, but extra connections will be queued instead of returning an error immediately.
-|
-|
+* '''Watchdog'''
-| Removed from 4.1. 2018/11/29
+: Watchdog can coordinate multiple Pgpool-II, create a robust cluster system and avoid the single point of failure or split brain. Watchdog can perform lifecheck against other pgpool-II nodes, to detect a fault of Pgpoll-II. If active Pgpool-II goes down, standby Pgpool-II can be promoted to active, and take over Virtual IP.
-|- style="background:silver"
-| <s>004</s>
+* '''In Memory Query Cache'''
-| <s>[FEATURE] Seamless Application Failover</s>
+: In memory query cache allows to save a pair of SELECT statement and its result. If an identical SELECTs comes in, Pgpool-II returns the value from cache. Since no SQL parsing nor access to PostgreSQL are involved, using in memory cache is extremely fast. On the other hand, it might be slower than the normal path in some cases, because it adds some overhead of storing cache data.
-|
-|
+Pgpool-II speaks PostgreSQL's backend and frontend protocol, and relays messages between a backend and a frontend. Therefore, a database application (frontend) thinks that Pgpool-II is the actual PostgreSQL server, and the server (backend) sees Pgpool-II as one of its clients. Because Pgpool-II is transparent to both the server and the client, an existing database application can be used with Pgpool-II almost without a
-|
-|
+Pgpool-II talks PostgreSQL's backend and frontend protocol, and relays a connection between them. Therefore, a database application (frontend) thinks that Pgpool-II is the actual PostgreSQL server, and the server (backend) sees Pgpool-II as one of its clients. Because Pgpool-II is transparent to both the server and the client, an existing database application can be used with Pgpool-II almost without a change to its sources.
-|
-| <s>Similar to Oracle's "Transparent Application Failover".</s>
+== Pgpool-II License ==
-| Removed from 4.1. 2018/11/29
-|-style="background:beige"
+See [http://pgpool.net/mediawiki/index.php/pgpool-II_License License].
-| 005
-| [FEATURE] Enhancing pool_process and pool_pools
+== Stable versions ==
-| 2018/02/13
-|
+* Pgpool-II: 4.0, 3.7, 3.6, 3.5, 3.4
-| Low
+* pgpoolAdmin: 4.0, 3.7, 3.6, 3.5, 3.4
-| Small
-|
+== Contacts ==
-| [http://www.sraoss.jp/pipermail/pgpool-hackers/2018-February/002721.html [pgpool-hackers: 2721]]
-|
+* If you have technical questions regarding Pgpool-II, please subscribe [http://pgpool.net/mediawiki/index.php/Mailing_lists Pgpool-II mailing lists] and send questions to it (pgpool-general will be a starter). Please '''do not''' send technical questions via private email. We will not respond such that messages.
-|-style="background:silver"
-| <s>006</s>
+* If you believe that you found a vulnerability/security issues with Pgpool-II, please send a '''private email''' to ishii at sraoss.co.jp (he is the project leader).
-| <s>[FEATURE] Support more prefix for query routing (similar to NO LOAD BALANCE)</s>
-|
+= What's new =
-|
-|
+== News ==
-|
-|
+=== Pgpool-II 4.1.0, 4.0.7, 3.7.12, 3.6.19, 3.5.23 and 3.4.26 RPMs Update 2 officially released (2019/11/19) ===
-| <s>[http://www.sraoss.jp/pipermail/pgpool-hackers/2018-February/002721.html [pgpool-hackers: 2721]]</s>
-| Removed from 4.1. 2018/11/29
+Pgpool-II 4.1.0, 4.0.7, 3.7.12, 3.6.19, 3.5.23 and 3.4.26 RPMs Update 2 are officially released.
-|-style="background:silver"
+The updated RPM packages fixed the bug which logs are not output, when log_destination = 'syslog' is configured.
-| 007
-| [FEATURE] shared relation cache
+You can download them [https://pgpool.net/mediawiki/index.php/Downloads here].
-| 2018/11/20
-| 2019/02/29
+== Events ==
-| High
+=== PGConf.ASIA 2019 in Bali ===
-| Large
-| Hoshiai
+Bo Peng is going to give a presentation [https://www.sraoss.co.jp/event_seminar/2019/PGConf.ASIA.Bali.2019-PENG.pdf Setup a High-Availability and Load Balancing PostgreSQL Cluster: New Features of Pgpool-II 4.1] at [https://2019.pgconf.asia/ "PGConf.ASIA 2019"] held in Bali from September 8th to 11st.
-| [https://www.pgpool.net/pipermail/pgpool-hackers/2018-November/003124.html [pgpool-hackers: 3124]]
-| Done. https://git.postgresql.org/gitweb/?p=pgpool2.git;a=commit;h=46917d5458a82c75e98b247a74b7ee1827666159
+=== PGConf.ASIA 2018 in Tokyo ===
-|-style="background:beige"
-| rowspan="3" | 008
+Tatsuo Ishii and Bo Peng are going to give a presentation
-| [FEATURE] Enhance performance: performance regression test
+[http://www.pgpool.net/download.php?f=pgpool-past-now-and-future.pdf Celebrating its 15th Anniversary Pgpool-II Past Present and Future]
-| 2018/11/20
+[http://www.pgpool.net/download.php?f=pgpool-past-now-and-future-part2.pdf Celebrating its 15th Anniversary Pgpool-II Past Present and Future part2] at [http://www.pgconf.asia/EN/2018/day1/#B4 "PGConf.ASIA 2018"] held in Tokyo from December 10th to 12th.
-|
-| High
+=== PGConf.ASIA 2017 in Tokyo ===
-| Small
-| Usama
+Tatsuo Ishii is going to give a presentation  [http://www.pgconf.asia/EN/2017/day-2/#B5 "More reliability and support for PostgreSQL 10: Introducing Pgpool-II 3.7"] at [http://www.pgconf.asia/EN/2017/ "PGConf.ASIA 2017"], held in Tokyo from December 4th to 6th.
-|
-|
+=== PostgreSQL Conference in Russia 2016 ===
-|-style="background:beige"
-| [FEATURE] Enhance performance: performance for simple query
+Tatsuo gave a talk "How to manage a herd of elephants" at [https://pgconf.ru/en "PostgreSQL Conference in Russia 2016"], held in Moscow from February 4th to 5th.
-| 2018/11/20
+The slides are available in [http://pgpool.net/mediawiki/index.php/Documentation#Developer.27s_documentation Developer's documentation].
-|
-|
+=== PostgreSQL Conference in China 2015 ===
-| XLarge
-| Usama
+Tatsuo gave a talk "How to manage a herd of elephants" at [http://www.eventdove.com/event/106042 "PostgreSQL Conference in China 2015"], held in Beijing from November 21th to 22th.
-|
+The slides are available in [http://pgpool.net/mediawiki/index.php/Documentation#Developer.27s_documentation Developer's documentation].
-|
-|-style="background:beige"
+=== pgCon 2015 Cluster Hacker Summit ===
-| [FEATURE] Enhance performance: performance for extended query
-| 2019/01/17
+We participated "6th Postgres Cluster Hacker Summit" which was held as a part of PgCon 2015 Developer Unconference. We reported about Development Status Updates and pgpool-II 3.5 features. The slides are available in [http://pgpool.net/mediawiki/index.php/Documentation#Developer.27s_documentation Developer's documentation].
-|
-|
+=== Pgpool-II Day 2015 in Tokyo ===
-|
-| Ishii
+We had the very first time pgpool-II decicated conference. See the [http://pgpool.net/mediawiki/index.php/pgpool-II_Day_2015 event report].
-|
-| (1) Enhance performance for COPY XXX TO STDOUT (both for simple and extended query): https://git.postgresql.org/gitweb/?p=pgpool2.git;a=commit;h=702f7c86f9b8f82f61e47235505715891ffe1b23
+== New docs ==
-|-style="background:beige"
-| rowspan="3" | 009
+=== pgpool-II 3.5 is coming soon! ===
-| [Documentation] Review and improve the current document
-| 2018/11/20
+pgpool-II 3.5 alpha1 has been out. Tatsuo introduces [http://pgpool.net/mediawiki/index.php?title=pgpool-II_3.5_features&redirect=no "new features of pgpool-II 3.5."]
-|
-| High
+== Stable ==
-| Extra Large
-| Hoshiai
+=== Pgpool-II 4.1.0, 4.0.7, 3.7.12, 3.6.19, 3.5.23 and 3.4.26 RPMs Update 2 officially released (2019/11/19) ===
-|
-|
+Pgpool-II 4.1.0, 4.0.7, 3.7.12, 3.6.19, 3.5.23 and 3.4.26 RPMs Update 2 are officially released.
-|-style="background:silver"
+The updated RPM packages fixed the bug which logs are not output, when log_destination = 'syslog' is configured.
-| [Documentation] Update the examples to latest version.
-| 2018/11/20
+You can download them [https://pgpool.net/mediawiki/index.php/Downloads here].
-|
-| High
+=== Pgpool-II 4.1.0 released (2019/10/31) ===
-|
-| Peng
+Pgpool-II 4.1.0 is now relased.
-|
-| Done. https://git.postgresql.org/gitweb/?p=pgpool2.git;a=commit;h=0c9f716714dce156fe74469a933046b39896a072
+Major enhancements in Pgpool-II 4.1 include:
-|-style="background:beige"
-| [Documentation] Add a "Quik start" guid.
+* Statement level load balancing.
-| 2018/11/20
+* Auto failback.
-|
+* Enhance performance in number of areas.
-| High
+** Shared relation cache allows to reuse relation cache among sessions to reduce internal queries against PostgreSQL system catalogs.
-|
+** Have separate SQL parser for DML statements to eliminate unnecessary parsing effort.
-| Usama
+** Load balancing control for specific queries.
-|
+* Reduce Internal Queries against System Catalogs.
-|
+* Import PostgreSQL 12 SQL parser.
-|-style="background:beige"
+* etc.
-| 010
-| [FEATURE] Master watchdog sets quarantine state to primary node
+You can download it from [https://pgpool.net/mediawiki/index.php/Downloads here].
-| 2018/11/26
-|
+Release notes:
-| Normal
+[https://www.pgpool.net/docs/latest/en/html/ English]
-| Small
+[https://www.pgpool.net/docs/latest/ja/html/ Japanese]
-| Usama
-| [http://www.sraoss.jp/pipermail/pgpool-hackers/2018-March/002756.html [pgpool-hackers: 2756]] <br>[https://www.pgpool.net/pipermail/pgpool-general-jp/2018-March/001503.html [pgpool-general-jp: 1504]]
+=== Pgpool-II 4.0.7, 3.7.12, 3.6.19, 3.5.23 and 3.4.26 officially released (2019/10/31) ===
-|
-|-style="background:silver"
+Pgpool-II 4.0.7, 3.7.12, 3.6.19, 3.5.23 and 3.4.26 officially released
-| 011
-| [FEATURE] limiting number of frontends differently
+Please note that 3.4.26 is the last release of 3.4 series
-| 2018/11/26
+because 5 years has passed since 3.4 was out (2014/11).
-| 2018/12/04
-|
+You can download them [https://pgpool.net/mediawiki/index.php/Downloads here].
-|
-| Ishii
+* 4.0.7 :  [https://www.pgpool.net/docs/latest/en/html/release-4-0-6.html English] [https://www.pgpool.net/docs/latest/ja/html/release-4-0-6.html Japanese]
-| [http://www.sraoss.jp/pipermail/pgpool-hackers/2018-November/003153.html [pgpool-hackers: 3153]]
+* 3.7.12 :  [https://www.pgpool.net/docs/latest/en/html/release-3-7-11.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-7-11.html Japanese]
-| Done. [https://git.postgresql.org/gitweb/?p=pgpool2.git;a=commitdiff;h=693a6284cf2dfc2e60d5a2489c9ee5167defc3dc commit]
+* 3.6.19 :  [https://www.pgpool.net/docs/latest/en/html/release-3-6-18.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-6-18.html Japanese]
-|-style="background:beige"
+* 3.5.23 :  [https://www.pgpool.net/docs/latest/en/html/release-3-5-22.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-5-22.html Japanese]
-| 012
+* 3.4.26:  [https://www.pgpool.net/docs/latest/en/html/release-3-4-25.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-4-25.html Japanese]
-| [FEATURE] Don't load balance after a SELECT having functions specified in black function list and queries specified in black_query_pattern_list
-| 2018/11/29
+=== Pgpool-II 4.0.6, 3.7.11, 3.6.18, 3.5.22 and 3.4.25 officially released (2019/08/15) ===
-|
-| Normal
+Pgpool-II 4.0.6, 3.7.11, 3.6.18, 3.5.22 and 3.4.25 officially released
-| Small
-| Peng
+You can download them [https://pgpool.net/mediawiki/index.php/Downloads here].
-| [https://www.pgpool.net/pipermail/pgpool-hackers/2018-November/003157.html [pgpool-hackers: 3157]]
-|
+* 4.0.6 :  [https://www.pgpool.net/docs/latest/en/html/release-4-0-6.html English] [https://www.pgpool.net/docs/latest/ja/html/release-4-0-6.html Japanese]
-|-style="background:beige"
+* 3.7.11 :  [https://www.pgpool.net/docs/latest/en/html/release-3-7-11.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-7-11.html Japanese]
-| 013
+* 3.6.18 :  [https://www.pgpool.net/docs/latest/en/html/release-3-6-18.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-6-18.html Japanese]
-| [FEATURE] Support for LDAP authentication
+* 3.5.22 :  [https://www.pgpool.net/docs/latest/en/html/release-3-5-22.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-5-22.html Japanese]
-| 2018/11/29
+* 3.4.25:  [https://www.pgpool.net/docs/latest/en/html/release-3-4-25.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-4-25.html Japanese]
-|
-| High
+=== Pgpool-II 4.0.5, 3.7.10, 3.6.17, 3.5.21 and 3.4.24 officially released (2019/05/16) ===
-| Medium
-| Usama
+Pgpool-II 4.0.5, 3.7.10, 3.6.17, 3.5.21 and 3.4.24 officially released
-|
-|
+You can download them [https://pgpool.net/mediawiki/index.php/Downloads here].
-|-style="background:beige"
-| 014
+* 4.0.5 :  [https://www.pgpool.net/docs/latest/en/html/release-4-0-5.html English] [https://www.pgpool.net/docs/latest/ja/html/release-4-0-5.html Japanese]
-| [FEATURE] Support for PostgreSQL 12.
+* 3.7.10 :  [https://www.pgpool.net/docs/latest/en/html/release-3-7-10.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-7-10.html Japanese]
-| 2018/11/29
+* 3.6.17 :  [https://www.pgpool.net/docs/latest/en/html/release-3-6-17.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-6-17.html Japanese]
-|
+* 3.5.21 :  [https://www.pgpool.net/docs/latest/en/html/release-3-5-21.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-5-21.html Japanese]
-| High
+* 3.4.24:  [https://www.pgpool.net/docs/latest/en/html/release-3-4-24.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-4-24.html Japanese]
-| Small
-|
+=== Pgpool-II 4.0.4, 3.7.9, 3.6.16, 3.5.20 and 3.4.23 officially released (2019/03/29) ===
-| recovery.conf <br> table OID
-|
+Pgpool-II 4.0.4, 3.7.9, 3.6.16, 3.5.20 and 3.4.23 officially released
-|-style="background:beige"
-| 015
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
-| [FEATURE] Import PostgreSQL 12 parser.
-| 2018/11/29
+* 4.0.4 :  [https://www.pgpool.net/docs/latest/en/html/release-4-0-4.html English] [https://www.pgpool.net/docs/latest/ja/html/release-4-0-4.html Japanese]
-|
+* 3.7.9 :  [https://www.pgpool.net/docs/latest/en/html/release-3-7-9.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-7-9.html Japanese]
-| High
+* 3.6.16 :  [https://www.pgpool.net/docs/latest/en/html/release-3-6-16.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-6-16.html Japanese]
-| Medium
+* 3.5.20 :  [https://www.pgpool.net/docs/latest/en/html/release-3-5-20.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-5-20.html Japanese]
-| Peng
+* 3.4.23:  [https://www.pgpool.net/docs/latest/en/html/release-3-4-23.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-4-23.html Japanese]
-|
-|
+=== Pgpool-II 4.0.3, 3.7.8, 3.6.15, 3.5.19 and 3.4.22 officially released (2019/02/21) ===
-|-style="background:silver"
-| 016
+Pgpool-II 4.0.3, 3.7.8, 3.6.15, 3.5.19 and 3.4.22 officially released
-| [FEATURE] Statement level load balancing
-| 2018/12/06
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
-| 2019/03/31
-| High
+* 4.0.3 :  [https://www.pgpool.net/docs/latest/en/html/release-4-0-3.html English] [https://www.pgpool.net/docs/latest/ja/html/release-4-0-3.html Japanese]
-| Large
+* 3.7.8 :  [https://www.pgpool.net/docs/latest/en/html/release-3-7-8.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-7-8.html Japanese]
-| Peng
+* 3.6.15 :  [https://www.pgpool.net/docs/latest/en/html/release-3-6-15.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-6-15.html Japanese]
-|
+* 3.5.19 :  [https://www.pgpool.net/docs/latest/en/html/release-3-5-19.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-5-19.html Japanese]
-| Done.https://git.postgresql.org/gitweb/?p=pgpool2.git;a=commit;h=1099ba610eef06a9dab6f89486cc52de55ff3ebb
+* 3.4.22:  [https://www.pgpool.net/docs/latest/en/html/release-3-4-22.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-4-22.html Japanese]
-|-style="background:beige"
-| 017
+=== pgpoolAdmin 4.0.1 officially released (2018/12/20) ===
-| [FEATURE] Add IPv6 sppport for Pgpool-II
-| 2019/01/17
+PgPool Global Development Group has released a Security Update of pgpoolAdmin.
-|
-| Low
+The purpose of this release is to address CVE-2018-16203, which
-|
+allow an attacker to login without properly checking the authorization.
-| Ishii
+Once getting into gpoolAdmin, the attacker can control Pgpool-II.
-|
+Also it may be possible to obtain the superuser role of a PostgreSQL database.
-|
-|-style="background:silver"
+This vulnability affects all versions of pgpoolAdmin. We recommend
-| 101
+upgrade pgpoolAdmin to 4.0.1 immediately (remember that PgpoolAdmin
-| 0000433: IN (SELECT ...) can not be rewritten in native replication mode
+.0.1 is compatible with Pgpool-II 3.4 or later).
-| 2018/10/19
-|
+PgPool Global Development Group would like to thank Fotios Rogkotis
-|
+of DarkMatter for finding the security issue and giving us the
-|
+detailed studies on it.
-| Peng
-| [http://www.pgpool.net/mantisbt/view.php?id=433 bug433]
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
-| Done. [https://git.postgresql.org/gitweb/?p=pgpool2.git;a=commit;h=d53292592a9808b260171f8569752ca89d7412fc commit] <br>Regression test should be added.
-|-style="background:silver"
+=== Pgpool-II 4.0.2, 3.7.7, 3.6.14, 3.5.18 and 3.4.21 officially released (2018/11/22) ===
-| 102
-| 0000434: Segmentation fault due to a query error and Sync messages in native replication mode
+Pgpool-II 4.0.2, 3.7.7, 3.6.14, 3.5.18 and 3.4.21 officially released
-| 2018/10/19
-|
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
-|
-|
+* 4.0.2 :  [https://www.pgpool.net/docs/latest/en/html/release-4-0-2.html English] [https://www.pgpool.net/docs/latest/ja/html/release-4-0-2.html Japanese]
-| Hoshiai
+* 3.7.7 :  [https://www.pgpool.net/docs/latest/en/html/release-3-7-7.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-7-7.html Japanese]
-| [https://www.pgpool.net/mantisbt/view.php?id=434 bug434]
+* 3.6.14 :  [https://www.pgpool.net/docs/latest/en/html/release-3-6-14.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-6-14.html Japanese]
-| Done. [https://git.postgresql.org/gitweb/?p=pgpool2.git;a=commit;h=5e6d598b964ac88f41a18280f6289ca5e78ffad5 commit]
+* 3.5.18 :  [https://www.pgpool.net/docs/latest/en/html/release-3-5-18.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-5-18.html Japanese]
-|-style="background:silver"
+* 3.4.21:  [https://www.pgpool.net/docs/latest/en/html/release-3-4-21.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-4-21.html Japanese]
-| 103
-| pool_passwd is corrupted.
+=== Pgpool-II 4.0.1, 3.7.6, 3.6.13, 3.5.17 and 3.4.20 officially released (2018/10/31) ===
-| 2018/10/22
-|
+Pgpool-II 4.0.1, 3.7.6, 3.6.13, 3.5.17 and 3.4.20 officially released
-|
-|
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
-| Hoshiai, Usama
-| [http://www.sraoss.jp/pipermail/pgpool-hackers/2018-October/003081.html [pgpool-hackers: 3081]]
+* 4.0.1 :  [https://www.pgpool.net/docs/latest/en/html/release-4-0-1.html English] [https://www.pgpool.net/docs/latest/ja/html/release-4-0-1.html Japanese]
-| Done. [https://git.postgresql.org/gitweb/?p=pgpool2.git;a=commit;h=d48cc28a7b2ac42185b48873608ff876f9298d89 commit]
+* 3.7.6 :  [https://www.pgpool.net/docs/latest/en/html/release-3-7-6.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-7-6.html Japanese]
-|-style="background:silver"
+* 3.6.13 :  [https://www.pgpool.net/docs/latest/en/html/release-3-6-13.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-6-13.html Japanese]
-| 104
+* 3.5.17 :  [https://www.pgpool.net/docs/latest/en/html/release-3-5-17.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-5-17.html Japanese]
-| [pgpool-hackers: 3025] Compile warns
+* 3.4.20:  [https://www.pgpool.net/docs/latest/en/html/release-3-4-20.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-4-20.html Japanese]
-| 2018/10/22
-|
+=== Pgpool-II 4.0.0 and pgpoolAdmin 4.0.0 officially released (2018/10/19) ===
-|
-|
+Pgpool-II 4.0.0 and pgpoolAdmin 4.0.0 are now relased.
-| Hoshiai
-| [http://www.sraoss.jp/pipermail/pgpool-hackers/2018-August/003025.html [pgpool-hackers: 3025]]
+V4.0 has new features:
-| Done. [https://git.postgresql.org/gitweb/?p=pgpool2.git;a=commit;h=bc9119f61b187577d64b63ebffb6f5412202f24f commit]
-|-style="background:silver"
+* Add SCRAM and Certificate authentication support.
-| 105
+* Detecting "false" primary server of PostgreSQL.
-| 0000443: Segmentation fault occurs when a certain Bind message is sent in native replication mode.
+* Improvements to load balancing:
-| 2018/11/08
+** More load balancing fine control after write queries.
-|
+** Load balancing control for specific queries.
-|
+** Allow to specify load balance weight ratio for load balance parameters.
-|
+* Add last state change timestamp to SHOW POOL NODES.
-| Peng
+* Import PostgreSQL 11 SQL parser.
-| [https://www.pgpool.net/mantisbt/view.php?id=443 bug443]
+* Logging client messages.
-| Done. [https://git.postgresql.org/gitweb/?p=pgpool2.git;a=commit;h=1d8d03237a2ad507f8f1fb8fb0c84b3084f57cdc commit]
+* etc.
-|-style="background:silver"
-| 106
+You can download it from [https://pgpool.net/mediawiki/index.php/Downloads here].
-| 0000444: pgpool does not take into account parameters order in startup packet
-| 2018/11/13
+Release notes:
-|
+[https://www.pgpool.net/docs/latest/en/html/release-4-0.html English] [https://www.pgpool.net/docs/latest/ja/html/release-4-0.html Japanese]
-|
-|
+=== Pgpool-II 3.7.5, 3.6.12, 3.5.16, 3.4.19 and 3.3.22 officially released (2018/07/31) ===
-| Hoshiai
-| [https://www.pgpool.net/mantisbt/view.php?id=444 bug444]
+Pgpool-II 3.7.5, 3.6.12, 3.5.16, 3.4.19 and 3.3.22 officially released
-| Done. [https://git.postgresql.org/gitweb/?p=pgpool2.git;a=commit;h=ffb998517bb91c512b77fbe1ca8ee331e492f131 commit]
-|-style="background:silver"
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
-| 107
-| 0000448: pgpool holds the connections as idle_in_transaction which are timed out due to idle_in_transaction setting on backend nodes
+* 3.7.5 :  [https://www.pgpool.net/docs/latest/en/html/release-3-7-5.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-7-5.html Japanese]
-| 2018/11/29
+* 3.6.12 :  [https://www.pgpool.net/docs/latest/en/html/release-3-6-12.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-6-12.html Japanese]
-|
+* 3.5.16 :  [https://www.pgpool.net/docs/latest/en/html/release-3-5-16.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-5-16.html Japanese]
-|
+* 3.4.19:  [https://www.pgpool.net/docs/latest/en/html/release-3-4-19.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-4-19.html Japanese]
-|
+* 3.3.22:  [https://www.pgpool.net/docs/latest/en/html/release-3-3-22.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-3-22.html Japanese]
-| Ishii
-| [https://www.pgpool.net/mantisbt/view.php?id=448 bug448]
+Please note that 3.3.22 is the last release of 3.3 series because 5 years has passed since 3.3 was out (2013/07/30).
-| Done. [https://git.postgresql.org/gitweb/?p=pgpool2.git;a=commitdiff;h=3f5986eee360f12e6a0bb77aa46f95abf5f6bc10 cimmit]
-|-style="background:white"
+=== Pgpool-II 3.7.4, 3.6.11, 3.5.15 and 3.4.18 officially released (2018/06/12) ===
-| 108
-| [pgpool-general: 6351] kind mismatch among backends, savepoint with psqlodbc
+Pgpool-II 3.7.4, 3.6.11, 3.5.15 and 3.4.18 officially released
-| 2018/12/26
-|
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
-|
-|
+* 3.7.4 :  [https://www.pgpool.net/docs/latest/en/html/release-3-7-4.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-7-4.html Japanese]
-| Peng
+* 3.6.11 :  [https://www.pgpool.net/docs/latest/en/html/release-3-6-11.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-6-11.html Japanese]
-| [https://www.pgpool.net/pipermail/pgpool-general/2018-December/006409.html [pgpool-general: 6351]]
+* 3.5.15 :  [https://www.pgpool.net/docs/latest/en/html/release-3-5-15.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-5-15.html Japanese]
-| Waiting for feedback.
+* 3.4.18:  [https://www.pgpool.net/docs/latest/en/html/release-3-4-18.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-4-18.html Japanese]
-|-style="background:silver"
-| 109
+=== Pgpool-II 3.7.3, 3.6.10, 3.5.14, 3.4.17 and 3.3.21 officially released (2018/04/17) ===
-| 0000455: watchdog lifecheck process has segfalut in query mode
-| 2019/01/21
+Pgpool-II 3.7.3, 3.6.10, 3.5.14, 3.4.17 and 3.3.21 officially released
-|
-|
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
-|
-| Usama
+* 3.7.3 :  [https://www.pgpool.net/docs/latest/en/html/release-3-7-3.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-7-3.html Japanese]
-| https://www.pgpool.net/mantisbt/view.php?id=455
+* 3.6.10 :  [https://www.pgpool.net/docs/latest/en/html/release-3-6-10.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-6-10.html Japanese]
-| Done. https://git.postgresql.org/gitweb/?p=pgpool2.git;a=commit;h=4cde5da1b416d909d102cfe6878c0cd5189caf86
+* 3.5.14 :  [https://www.pgpool.net/docs/latest/en/html/release-3-5-14.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-5-14.html Japanese]
-|-style="background:white"
+* 3.4.17:  [https://www.pgpool.net/docs/latest/en/html/release-3-4-17.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-4-17.html Japanese]
-| 110
+* 3.3.21:  [https://www.pgpool.net/docs/latest/en/html/release-3-3-21.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-3-21.html Japanese]
-| Add regression test for query mode
-| 2019/01/21
+=== Pgpool-II 3.7.2-2 RPMs are released. (2018/03/14) ===
-|
-|
+Pgpool-II 3.7.2-2 RPMs are released.
-|
-| Peng
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
-|
-|
+=== Pgpool-II 3.7.2, 3.6.9, 3.5.13, 3.4.16 and 3.3.20 officially released (2018/02/13) ===
-|-style="background:white"
-| 111
+Pgpool-II 3.7.2, 3.6.9, 3.5.13, 3.4.16 and 3.3.20 officially released
-| 0000483: online-recovery is blocked after a child process exits abnormally with replication mode and watchdog
-| 2019/04/04
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
-|
-|
+* 3.7.2 :  [https://www.pgpool.net/docs/latest/en/html/release-3-7-2.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-7-2.html Japanese]
-|
+* 3.6.9 :  [https://www.pgpool.net/docs/latest/en/html/release-3-6-9.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-6-9.html Japanese]
-| Usama
+* 3.5.13 :  [https://www.pgpool.net/docs/latest/en/html/release-3-5-13.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-5-13.html Japanese]
-| https://www.pgpool.net/mantisbt/view.php?id=483
+* 3.4.16:  [https://www.pgpool.net/docs/latest/en/html/release-3-4-16.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-4-16.html Japanese]
-|
+* 3.3.20:  [https://www.pgpool.net/docs/latest/en/html/release-3-3-20.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-3-20.html Japanese]
-|-style="background:white"
-| 201
+=== pgpoolAdmin 3.7.1 officially released (2018/02/05) ===
-| Feature Agreement
-|
+pgpoolAdmin 3.7.1 is officially released.
-|
-|
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
-|
-|
+[http://www.pgpool.net/docs/pgpoolAdmin/NEWS Release notes]
-|
-|
+=== Pgpool-II 3.7.1, 3.6.8, 3.5.12, 3.4.15 and 3.3.19 officially released (2018/01/09) ===
-|-style="background:white"
-| 202
+Pgpool-II 3.7.1, 3.6.8, 3.5.12, 3.4.15 and 3.3.19 officially released
-| Feature Freeze
-|
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
-|
-|
+* 3.7.1 :  [https://www.pgpool.net/docs/latest/en/html/release-3-7-1.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-7-1.html Japanese]
-|
+* 3.6.8 :  [https://www.pgpool.net/docs/latest/en/html/release-3-6-8.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-6-8.html Japanese]
-|
+* 3.5.12 :  [https://www.pgpool.net/docs/latest/en/html/release-3-5-12.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-5-12.html Japanese]
-|
+* 3.4.15:  [https://www.pgpool.net/docs/latest/en/html/release-3-4-15.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-4-15.html Japanese]
-|
+* 3.3.19:  [https://www.pgpool.net/docs/latest/en/html/release-3-3-19.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-3-19.html Japanese]
-|-style="background:white"
-| 202
+=== Pgpool-II 3.7.0 and pgpoolAdmin 3.7.0 officially released (2017/11/22) ===
-| Code Freeze
-|
+Pgpool-II 3.7.0 and pgpoolAdmin 3.7.0 are now relased.
-|
-|
+V3.7 has new features:
-|
+* Quorum aware failover feature.
-|
+* Allow specifying the hostnames in pool_hba.
-|
+* Allow to specify per node health check parameters.
-|
+* Support AWS Aurora.
-|}
+* Import PostgreSQL 10 SQL parser.
+* Support logical replication.
+* etc.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+Release notes:
+[https://www.pgpool.net/docs/latest/en/html/release-3-7.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-7.html Japanese]
+=== Pgpool-II 3.6.7, 3.5.11, 3.4.14 and 3.3.18 officially released (2017/11/01) ===
+Pgpool-II 3.6.7, 3.5.11, 3.4.14 and 3.3.18 officially released
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+* 3.6.7 :  [https://www.pgpool.net/docs/latest/en/html/release-3-6-7.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-6-7.html Japanese]
+* 3.5.11 :  [https://www.pgpool.net/docs/latest/en/html/release-3-5-11.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-5-11.html Japanese]
+* 3.4.14:  [https://www.pgpool.net/docs/latest/en/html/release-3-4-14.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-4-14.html Japanese]
+* 3.3.18:  [https://www.pgpool.net/docs/latest/en/html/release-3-3-18.html English] [https://www.pgpool.net/docs/latest/ja/html/release-3-3-18.html Japanese]
+=== Pgpool-II 3.6.6, 3.5.10, 3.4.13, 3.3.17 and 3.2.22 officially released (2017/09/05) ===
+Pgpool-II 3.6.6, 3.5.10, 3.4.13, 3.3.17, 3.2.22 and pgpoolAdmin 3.6.2 officially released
+You can download them [https://pgpool.net/mediawiki/index.php/Downloads here].
+* 3.6.6 :  [http://www.pgpool.net/docs/latest/en/html/release-3-6-6.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-6-6.html Japanese]
+* 3.5.10 :  [http://www.pgpool.net/docs/latest/en/html/release-3-5-10.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-5-10.html Japanese]
+* 3.4.13:  [http://www.pgpool.net/docs/latest/en/html/release-3-4-13.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-4-13.html Japanese]
+* 3.3.17:  [http://www.pgpool.net/docs/latest/en/html/release-3-3-17.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-3-17.html Japanese]
+* 3.2.22:  [http://www.pgpool.net/docs/latest/en/html/release-3-2-22.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-2-22.html Japanese]
+=== Pgpool-II 3.6.5, 3.5.9, 3.4.12, 3.3.16 and 3.2.21 officially released (2017/07/11) ===
+Pgpool-II 3.6.5, 3.5.9, 3.4.12, 3.3.16 and 3.2.21 officially released
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+* 3.6.5 :  [http://www.pgpool.net/docs/latest/en/html/release-3-6-5.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-6-5.html Japanese]
+* 3.5.9 :  [http://www.pgpool.net/docs/latest/en/html/release-3-5-9.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-5-9.html Japanese]
+* 3.4.12:  [http://www.pgpool.net/docs/latest/en/html/release-3-4-12.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-4-12.html Japanese]
+* 3.3.16:  [http://www.pgpool.net/docs/latest/en/html/release-3-3-16.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-3-16.html Japanese]
+* 3.2.21:  [http://www.pgpool.net/docs/latest/en/html/release-3-2-21.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-2-21.html Japanese]
+=== Pgpool-II 3.6.4, 3.5.8 officially released (2017/05/11) ===
+Pgpool-II 3.6.4, 3.5.8 officially released
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+* 3.6.4:  [http://www.pgpool.net/docs/latest/en/html/release-3-6-4.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-6-4.html Japanese]
+* 3.5.8:  [http://www.pgpool.net/docs/latest/en/html/release-3-5-8.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-5-8.html Japanese]
+=== Pgpool-II 3.6.3, 3.5.7, 3.4.11, 3.3.15, 3.2.20 and pgpoolAdmin 3.6.1 officially released (2017/04/28) ===
+Pgpool-II 3.6.3, 3.5.7, 3.4.11, 3.3.15, 3.2.20 and pgpoolAdmin 3.6.1 officially released
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+* 3.6.3:  [http://www.pgpool.net/docs/latest/en/html/release-3-6-3.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-6-3.html Japanese]
+* 3.5.7:  [http://www.pgpool.net/docs/latest/en/html/release-3-5-7.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-5-7.html Japanese]
+* 3.4.11:  [http://www.pgpool.net/docs/latest/en/html/release-3-4-11.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-4-11.html Japanese]
+* 3.3.15:  [http://www.pgpool.net/docs/latest/ja/html/release-3-3-15.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-3-15.html Japanese]
+* 3.2.20:  [http://www.pgpool.net/docs/latest/ja/html/release-3-2-20.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-2-20.html Japanese]
+=== Pgpool-II 3.6.2, 3.5.6, 3.4.10, 3.3.14 and 3.2.19 officially released (2017/03/17) ===
+Pgpool-II 3.6.2, 3.5.6, 3.4.10, 3.3.14 and 3.2.19 officially released
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+* 3.6.2:  [http://www.pgpool.net/docs/latest/en/html/release-3-6-2.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-6-2.html Japanese]
+* 3.5.6:  [http://www.pgpool.net/docs/latest/en/html/release-3-5-6.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-5-6.html Japanese]
+* 3.4.10:  [http://www.pgpool.net/docs/latest/en/html/release-3-4-10.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-4-10.html Japanese]
+* 3.3.14:  [http://www.pgpool.net/docs/latest/ja/html/release-3-3-14.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-3-14.html Japanese]
+* 3.2.19:  [http://www.pgpool.net/docs/latest/ja/html/release-3-2-19.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-2-19.html Japanese]
+=== pgpoolAdmin 3.6.0 officially released (2017/02/28) ===
+pgpoolAdmin 3.6.0 is officially released.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+=== pgpool-II 3.6.1, 3.5.5, 3.4.9, 3.3.13, 3.2.18 and 3.1.21 officially released (2016/12/26) ===
+These are the latest stable versions of each major branches.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+* 3.6.1:  [http://www.pgpool.net/docs/latest/en/html/release-3-6-1.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-6-1.html Japanese]
+* 3.5.5:  [http://www.pgpool.net/docs/latest/en/html/release-3-5-5.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-5-5.html Japanese]
+* 3.4.9:  [http://www.pgpool.net/docs/latest/en/html/release-3-4-9.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-4-9.html Japanese]
+* 3.3.13:  [http://www.pgpool.net/docs/latest/en/html/release-3-3-13.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-3-13.html Japanese]
+* 3.2.18:  [http://www.pgpool.net/docs/latest/en/html/release-3-2-18.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-2-18.html Japanese]
+* 3.1.21:  [http://www.pgpool.net/docs/latest/en/html/release-3-1-21.html English] [http://www.pgpool.net/docs/latest/ja/html/release-3-1-21.html Japanese]
+pgpool-II 3.1.21 is the final release of the 3.1.x. This series has reached "End of Life", and is no longer maintained and does not receive any updates.
+=== pgpool-II 3.6.0 officially released (2016/11/21) ===
+Pgpool-II 3.6.0 is now officially released.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+V3.6's new features are:
+* Improve the behavior of fail-over.
+* New PGPOOL SET command has been introduced.
+* Watchdog is significantly enhanced.
+* Handling of extended query protocol (e.g. used by Java applications) in streaming replication mode speeds up if many rows are returned in a result set.
+* Import parser of PostgreSQL 9.6.
+* In some cases pg_terminate_backend() now does not trigger a fail-over.
+* Change documentation format from raw HTML to SGML.
+* etc.
+=== pgpool-II 3.5.4, 3.4.8, 3.3.12, 3.2.17 and 3.1.20 officially released (2016/08/31) ===
+These are the latest stable versions of each major branches.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+* 3.5.4:  [http://www.pgpool.net/docs/pgpool-II-3.5.4/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.5.4/doc/pgpool-ja.html#release3.5.4 Japanese]
+* 3.4.8:  [http://www.pgpool.net/docs/pgpool-II-3.4.8/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.4.8/doc/pgpool-ja.html#release3.4.8 Japanese]
+* 3.3.12:  [http://www.pgpool.net/docs/pgpool-II-3.3.12/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.3.12/doc/pgpool-ja.html#release3.3.12 Japanese]
+* 3.2.17:  [http://www.pgpool.net/docs/pgpool-II-3.2.17/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.2.17/doc/pgpool-ja.html#release3.2.17 Japanese]
+* 3.1.20: [http://www.pgpool.net/docs/pgpool-II-3.1.20/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.1.20/doc/pgpool-ja.html#release3.1.20 Japanese]
+=== pgpool-II 3.5.3, 3.4.7, 3.3.11, 3.2.16, 3.1.19, and pgpoolAdmin 3.5.3 officially released (2016/06/17) ===
+These are the latest stable versions of each major branches.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+* 3.5.3:  [http://www.pgpool.net/docs/pgpool-II-3.5.3/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.5.3/doc/pgpool-ja.html#release3.5.3 Japanese]
+* 3.4.7:  [http://www.pgpool.net/docs/pgpool-II-3.4.7/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.4.7/doc/pgpool-ja.html#release3.4.7 Japanese]
+* 3.3.11:  [http://www.pgpool.net/docs/pgpool-II-3.3.11/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.3.11/doc/pgpool-ja.html#release3.3.11 Japanese]
+* 3.2.16:  [http://www.pgpool.net/docs/pgpool-II-3.2.16/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.2.16/doc/pgpool-ja.html#release3.2.16 Japanese]
+* 3.1.19: [http://www.pgpool.net/docs/pgpool-II-3.1.19/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.1.19/doc/pgpool-ja.html#release3.1.19 Japanese]
+=== pgpool-II 3.5.2, 3.4.6, 3.3.10, 3.2.15, 3.1.18, and pgpoolAdmin 3.5.2 officially released (2016/04/26) ===
+These are the latest stable versions of each major branches.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+* 3.5.2:  [http://www.pgpool.net/docs/pgpool-II-3.5.2/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.5.2/doc/pgpool-ja.html#release3.5.2 Japanese]
+* 3.4.6:  [http://www.pgpool.net/docs/pgpool-II-3.4.6/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.4.6/doc/pgpool-ja.html#release3.4.6 Japanese]
+* 3.3.10:  [http://www.pgpool.net/docs/pgpool-II-3.3.10/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.3.10/doc/pgpool-ja.html#release3.3.10 Japanese]
+* 3.2.15:  [http://www.pgpool.net/docs/pgpool-II-3.2.15/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.2.15/doc/pgpool-ja.html#release3.2.15 Japanese]
+* 3.1.18: [http://www.pgpool.net/docs/pgpool-II-3.1.18/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.1.18/doc/pgpool-ja.html#release3.1.18 Japanese]
+=== pgpool-II 3.5.1, 3.4.5, 3.3.9, 3.2.14, 3.1.17, and pgpoolAdmin 3.5.1 officially released (2016/04/04) ===
+These are the latest stable versions of each major branches.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+* 3.5.1:  [http://www.pgpool.net/docs/pgpool-II-3.5.1/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.5.1/doc/pgpool-ja.html#release3.5.1 Japanese]
+* 3.4.5:  [http://www.pgpool.net/docs/pgpool-II-3.4.5/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.4.5/doc/pgpool-ja.html#release3.4.5 Japanese]
+* 3.3.9:  [http://www.pgpool.net/docs/pgpool-II-3.3.9/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.3.9/doc/pgpool-ja.html#release3.3.9 Japanese]
+* 3.2.14:  [http://www.pgpool.net/docs/pgpool-II-3.2.14/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.2.14/doc/pgpool-ja.html#release3.2.14 Japanese]
+* 3.1.17: [http://www.pgpool.net/docs/pgpool-II-3.1.17/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.1.17/doc/pgpool-ja.html#release3.1.17 Japanese]
+=== pgpool-II 3.4.4, 3.3.8, 3.2.13, 3.1.16, and 3.0.20 officially released (2016/02/05) ===
+These are the latest stable versions of each major branches.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+* 3.4.4:  [http://www.pgpool.net/docs/pgpool-II-3.4.4/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.4.4/doc/pgpool-ja.html#release3.4.4 Japanese]
+* 3.3.8:  [http://www.pgpool.net/docs/pgpool-II-3.3.8/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.3.8/doc/pgpool-ja.html#release3.3.8 Japanese]
+* 3.2.13:  [http://www.pgpool.net/docs/pgpool-II-3.2.13/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.2.13/doc/pgpool-ja.html#release3.2.13 Japanese]
+* 3.1.16: [http://www.pgpool.net/docs/pgpool-II-3.1.16/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.1.16/doc/pgpool-ja.html#release3.1.16 Japanese]
+* 3.0.20: [http://www.pgpool.net/docs/pgpool-II-3.0.20/doc/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.0.20/doc/pgpool-ja.html#release3.0.20 Japanese]
+pgpool-II 3.0.20 is the final release of the 3.0.x. This series has reached "End of Life", and is no longer maintained and does not receive any updates.
+=== pgpool-II 3.5.0 and pgpoolAdmin 3.5.0 officially released (2016/01/29) ===
+Pgpool-II 3.5.0 and pgpoolAdmin 3.5.0 are now officially released.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+V3.5's new features are:
+* Improved performance in extended query protocol
+* Overcoming the thundering herd problem
+* watchdog feature enhancements to be more robust and adaptable
+* PCP command enhancements
+* Import PostgreSQL 9.5 parser
+* etc.
+Please see [http://pgpool.net/mediawiki/index.php?title=pgpool-II_3.5_features&redirect=no this] for details.
+.5.0 release note:  [http://www.pgpool.net/docs/pgpool-II-3.5.0/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.5.0/doc/pgpool-ja.html#release3.5.0 Japanese]
+=== pgpool-II 3.4.3, 3.3.7, 3.2.12, 3.1.15, and 3.0.19 officially released (2015/07/24) ===
+These are the latest stable versions of each major branches.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+* 3.4.3:  [http://www.pgpool.net/docs/pgpool-II-3.4.3/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.4.3/doc/pgpool-ja.html#release3.4.3 Japanese]
+* 3.3.7:  [http://www.pgpool.net/docs/pgpool-II-3.3.7/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.3.7/doc/pgpool-ja.html#release3.3.7 Japanese]
+* 3.2.12:  [http://www.pgpool.net/docs/pgpool-II-3.2.12/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.2.12/doc/pgpool-ja.html#release3.2.12 Japanese]
+* 3.1.15: [http://www.pgpool.net/docs/pgpool-II-3.1.15/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.1.15/doc/pgpool-ja.html#release3.1.15 Japanese]
+* 3.0.19: [http://www.pgpool.net/docs/pgpool-II-3.0.19/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.0.19/doc/pgpool-ja.html#release3.0.19 Japanese]
+=== pgpool-II 3.4.2, 3.3.6, 3.2.11, 3.1.14, and 3.0.18 officially released (2015/04/08) ===
+These are the latest stable versions of each major branches.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+* 3.4.2:  [http://www.pgpool.net/docs/pgpool-II-3.4.2/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.4.2/doc/pgpool-ja.html#release3.4.2 Japanese]
+* 3.3.6:  [http://www.pgpool.net/docs/pgpool-II-3.3.6/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.3.6/doc/pgpool-ja.html#release3.3.6 Japanese]
+* 3.2.11:  [http://www.pgpool.net/docs/pgpool-II-3.2.11/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.2.11/doc/pgpool-ja.html#release3.2.11 Japanese]
+* 3.1.14: [http://www.pgpool.net/docs/pgpool-II-3.1.14/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.1.14/doc/pgpool-ja.html#release3.1.14 Japanese]
+* 3.0.18: [http://www.pgpool.net/docs/pgpool-II-3.0.18/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.0.18/doc/pgpool-ja.html#release3.0.18 Japanese]
+=== pgpool-II 3.4.1, 3.3.5, 3.2.10, 3.1.13, 3.0.17  and pgpoolAdmin 3.4.1 officially released (2015/02/05) ===
+These are the latest stable versions of each major branches.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+* 3.4.1:  [http://www.pgpool.net/docs/pgpool-II-3.4.1/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.4.1/doc/pgpool-ja.html#release3.4.1 Japanese]
+* 3.3.5:  [http://www.pgpool.net/docs/pgpool-II-3.3.5/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.3.5/doc/pgpool-ja.html#release3.3.5 Japanese]
+* 3.2.10:  [http://www.pgpool.net/docs/pgpool-II-3.2.10/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.2.10/doc/pgpool-ja.html#release3.2.10 Japanese]
+* 3.1.13: [http://www.pgpool.net/docs/pgpool-II-3.1.13/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.1.13/doc/pgpool-ja.html#release3.1.13 Japanese]
+* 3.0.17: [http://www.pgpool.net/docs/pgpool-II-3.0.17/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.0.17/doc/pgpool-ja.html#release3.0.17 Japanese]
+* pgpoolAdmin 3.4.1: [http://www.pgpool.net/docs/pgpoolAdmin-3.4.1/NEWS.txt English]
+=== The pgpool-II official yum repository released (2014/12/16) ===
+PgPool Global Development Group announced the pgpool-II official yum repository.
+With this repository, you will be able to install or update pgpool-II and pgpoolAdmin etc. by using yum.
+http://www.pgpool.net/yum/
+The yum repository currently supports pgpool-II 3.3 or above with RHEL6 x86_64.
+See [[Yum Repository]] for detail.
+=== pgpool-II 3.4.0 and pgpoolAdmin 3.4.0 officially released (2014/11/07) ===
+Pgpool-II 3.4.0 is now officially released.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+V3.4's new features are:
+* Allow fine control of load balancing by using application name or database name
+* New features about log output
+** Allow to print pgpool-II process names
+**  Allow to control log verbosity like PostgreSQL
+* SQL parser compatible with PostgreSQL 9.4
+* Import PostgreSQL's memory manager and exception manager
+* Support IPv6 address
+* Reorganize source code tree
+* etc.
+* 3.4.0 release note:  [http://www.pgpool.net/docs/pgpool-II-3.4.0/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.4.0/doc/pgpool-ja.html#release3.4.0 Japanese]
+=== pgpool-II 3.3.4, 3.2.9, 3.1.12, and 3.0.16 are officially released (2014/09/05) ===
+These are the latest stable versions of each major branches.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+* 3.3.4:  [http://www.pgpool.net/docs/pgpool-II-3.3.4/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.3.4/doc/pgpool-ja.html#release3.3.4 Japanese]
+* 3.2.9:  [http://www.pgpool.net/docs/pgpool-II-3.2.9/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.2.9/doc/pgpool-ja.html#release3.2.9 Japanese]
+* 3.1.12: [http://www.pgpool.net/docs/pgpool-II-3.1.12/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.1.12/doc/pgpool-ja.html#release3.1.12 Japanese]
+* 3.0.16: [http://www.pgpool.net/docs/pgpool-II-3.0.16/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.0.16/doc/pgpool-ja.html#release3.0.16 Japanese]
+=== pgpool-ha 2.2 released (2014/04/01) ===
+This is the latest stable version.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads#pgpool-HA here].
+=== pgpool-II 3.3.3, 3.2.8, 3.1.11, 3.0.15  and pgpoolAdmin 3.3.1 officially released (2014/03/24) ===
+These are the latest stable versions of each major branches.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+* 3.3.3:  [http://www.pgpool.net/docs/pgpool-II-3.3.3/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.3.3/doc/pgpool-ja.html#release3.3.3 Japanese]
+* 3.2.8:  [http://www.pgpool.net/docs/pgpool-II-3.2.8/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.2.8/doc/pgpool-ja.html#release3.2.8 Japanese]
+* 3.1.11: [http://www.pgpool.net/docs/pgpool-II-3.1.11/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.1.11/doc/pgpool-ja.html#release3.1.11 Japanese]
+* 3.0.15: [http://www.pgpool.net/docs/pgpool-II-3.0.15/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.0.15/doc/pgpool-ja.html#release3.0.15 Japanese]
+* pgpoolAdmin 3.3.1: [http://www.pgpool.net/docs/pgpoolAdmin-3.3.1/NEWS.txt English]
+=== pgpool-II 3.2.7, 3.1.10, 3.0.14 officially released (2013/12/06) ===
+These are the latest stable versions of each major branches.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+* 3.2.7:  [http://www.pgpool.net/docs/pgpool-II-3.2.7/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.2.7/doc/pgpool-ja.html#release3.2.7 Japanese]
+* 3.1.10: [http://www.pgpool.net/docs/pgpool-II-3.1.10/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.1.10/doc/pgpool-ja.html#release3.1.10 Japanese]
+* 3.0.14: [http://www.pgpool.net/docs/pgpool-II-3.0.14/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.0.14/doc/pgpool-ja.html#release3.0.14 Japanese]
+=== pgpool-II 3.3.2 officially released (2013/11/29) ===
+These are the latest stable version of 3.3.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+* 3.3.2: [http://www.pgpool.net/docs/pgpool-II-3.3.2/NEWS.txt English] [http://www.pgpool.net/docs/pgpool-II-3.3.2/doc/pgpool-ja.html#release3.0.7 Japanese]
+=== pgpool-II 3.3.1, 3.2.6, 3.1.9, 3.0.13 officially released (2013/09/06) ===
+These are the latest stable versions of each major branches.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+=== Missing regression test suite in pgpool-II 3.3.0.tar.gz (2013/07/31) ===
+New regression test suite was not accidentally included in the pgpool-II 3.3.0.tar.gz tar ball.
+You can get it from git repository or download from
+[http://www.pgpool.net/download.php?f=regression-3.3.0.tar.gz here].
+=== pgpool-II 3.3 and pgpoolAdmin 3.3 officially released (2013/07/30) ===
+Pgpool-II 3.3 is now officially released.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+V3.3's new features are:
+* Enhancements for watchdog
+** New monitoring method of watchdog lifecheck using heartbeat signal
+** Interlocking of failover/failback script
+** Secure watchdog communication
+** PCP command for retrieving the watchdog status
+** etc.
+* Othres
+** Import PostgreSQL 9.2 raw parser
+** New pgpool_setup tool
+** Support for using CREATE EXTENSION to install pgpool specific extensions
+** regression test suit
+** etc.
+* [http://www.pgpool.net/docs/pgpool-II-3.3.0/NEWS.txt pgpool-II 3.3 release note (English)]
+* [http://www.pgpool.net/docs/pgpool-II-3.3.0/pgpool-ja.html#release3.3.0 pgpool-II 3.3 release note (Japanese)]
+=== pgpool-II 3.2.5, 3.1.8, 3.0.12 officially released (2013/07/10) ===
+These are the latest stable versions of each major branches.
+You can download them [http://pgpool.net/mediawiki/index.php/Downloads here].
+== Development ==
+=== Pgpool-II 4.1 RC1 released (2019/10/16) ===
+Pgpool-II 4.1 RC1 is now relased.
+This is not intended to be used in production but is close to the release version. So users are encouraged to test it out.
+Major enhancements in Pgpool-II 4.1 include:
+* Statement level load balancing.
+* Auto failback.
+* Enhance performance in number of areas.
+** Shared relation cache allows to reuse relation cache among sessions to reduce internal queries against PostgreSQL system catalogs.
+** Have separate SQL parser for DML statements to eliminate unnecessary parsing effort.
+** Load balancing control for specific queries.
+* Reduce Internal Queries against System Catalogs.
+* Import PostgreSQL 12 SQL parser.
+* etc.
+You can download it from [https://pgpool.net/mediawiki/index.php/Developer_releases here].
+Release notes:
+[https://www.pgpool.net/docs/41/en/html/ English]
+=== Pgpool-II 4.1 beta1 released (2019/09/06) ===
+Pgpool-II 4.1 beta1 is now relased.
+This is not a stable version but just for developers.
+Major enhancements in Pgpool-II 4.1 include:
+* Statement level load balancing.
+* Auto failback.
+* Enhance performance in number of areas.
+** Shared relation cache allows to reuse relation cache among sessions to reduce internal queries against PostgreSQL system catalogs.
+** Have separate SQL parser for DML statements to eliminate unnecessary parsing effort.
+** Load balancing control for specific queries.
+* Reduce Internal Queries against System Catalogs.
+* Import PostgreSQL 12 SQL parser.
+* etc.
+You can download it from [https://pgpool.net/mediawiki/index.php/Developer_releases here].
+Release notes:
+[https://www.pgpool.net/docs/41/en/html/ English]
+=== Pgpool-II 4.0 RC1 released (2018/10/03) ===
+Pgpool-II 4.0 RC1 is now relased.
+This is not intended to be used in production but is close to the release version. So users are encouraged to test it out.
+V4.0 has new features:
+* Add SCRAM and Certificate authentication support.
+* Detecting "false" primary server of PostgreSQL.
+* Improvements to load balancing:
+** More load balancing fine control after write queries.
+** Load balancing control for specific queries.
+** Allow to specify load balance weight ratio for load balance parameters.
+* Add last state change timestamp to SHOW POOL NODES.
+* Import PostgreSQL 11 SQL parser.
+* Logging client messages.
+* etc.
+You can download it from [https://pgpool.net/mediawiki/index.php/Developer_releases here].
+Release notes:
+[https://www.pgpool.net/docs/pgpool-II-4.0/en/html/release-4-0.html English]
+=== Pgpool-II 4.0 beta1 released (2018/09/19) ===
+Pgpool-II 4.0 beta1 is now relased.
+This is not a stable version but just for developers.
+V4.0 has new features:
+* Add SCRAM and Certificate authentication support.
+* Detecting "false" primary server of PostgreSQL.
+* Improvements to load balancing:
+** More load balancing fine control after write queries.
+** Load balancing control for specific queries.
+** Allow to specify load balance weight ratio for load balance parameters.
+* Add last state change timestamp to SHOW POOL NODES.
+* Import PostgreSQL 11 SQL parser.
+* Logging client messages.
+* etc.
+You can download it from [https://pgpool.net/mediawiki/index.php/Developer_releases here].
+Release notes:
+[https://www.pgpool.net/docs/pgpool-II-4.0/en/html/release-4-0.html English]
+=== Pgpool-II 4.0 alpha2 released (2018/09/06) ===
+Pgpool-II 4.0 alpha2 is now relased.
+This is not a stable version but just for developers.
+V4.0 has new features:
+* Add SCRAM and Certificate authentication support.
+* Detecting "false" primary server of PostgreSQL.
+* Improvements to load balancing:
+** More load balancing fine control after write queries.
+** Load balancing control for specific queries.
+** Allow to specify load balance weight ratio for load balance parameters.
+* Add last state change timestamp to SHOW POOL NODES.
+* Import PostgreSQL 11 SQL parser.
+* Logging client messages.
+* etc.
+You can download it from [https://pgpool.net/mediawiki/index.php/Developer_releases here].
+Release notes:
+[https://www.pgpool.net/docs/pgpool-II-4.0/en/html/release-4-0.html English]
+=== Pgpool-II 4.0 alpha1 released (2018/08/20) ===
+Pgpool-II 4.0 alpha1 is now relased.
+This is not a stable version but just for developers.
+V4.0 has new features:
+* Add SCRAM and Certificate authentication support.
+* Detecting "false" primary server of PostgreSQL.
+* Improvements to load balancing:
+** More load balancing fine control after write queries.
+** Load balancing control for specific queries.
+** Allow to specify load balance weight ratio for load balance parameters.
+* Add last state change timestamp to SHOW POOL NODES.
+*Logging client messages.
+* etc.
+You can download it from [http://pgpool.net/mediawiki/index.php/Developer_releases here].
+Release notes:
+[https://www.pgpool.net/docs/pgpool-II-4.0/en/html/release-4-0.html English]
+=== Pgpool-II 3.7 RC1 and pgpoolAdmin 3.7 RC1 released (2017/11/13) ===
+Pgpool-II 3.7 RC1 and pgpoolAdmin 3.7 RC1 are now relased.
+This is not intended to be used in production but is close to the
+release version. So users are encouraged to test it out.
+V3.7 has new features:
+* Quorum aware failover feature.
+* Allow specifying the hostnames in pool_hba.
+* Allow to specify per node health check parameters.
+* Support AWS Aurora.
+* Import PostgreSQL 10 SQL parser.
+* Support logical replication.
+* etc.
+You can download it from [http://pgpool.net/mediawiki/index.php/Developer_releases here].
+Release notes:
+[http://www.pgpool.net/docs/pgpool-II-3.7.0/doc/en/html/release-3-7.html English] [http://www.pgpool.net/docs/pgpool-II-3.7.0/doc/ja/html/release-3-7.html Japanese]
+=== Pgpool-II 3.7 beta1 released (2017/10/17) ===
+Pgpool-II 3.7 beta1 is now relased. This is not a stable version but just for developers.
+V3.7 has new features:
+* Quorum aware failover feature.
+* Allow specifying the hostnames in pool_hba.
+* Allow to specify per node health check parameters.
+* Support AWS Aurora.
+* Import PostgreSQL 10 SQL parser.
+* Support logical replication.
+* etc.
+You can download it from [http://pgpool.net/mediawiki/index.php/Developer_releases here].
+=== pgpool-II 3.6 RC1 released (2016/11/16) ===
+pgpool-II 3.6 RC1 is now relased. This is not a stable version but just for developers.
+You can download it from [http://pgpool.net/mediawiki/index.php/Developer_releases here].
+=== pgpool-II 3.6 beta2 released (2016/11/08) ===
+pgpool-II 3.6 beta2 is now relased. This is not a stable version but just for developers.
+Users are encouraged to take part in our beta test program. Please help us in testing and making pgpool-II 3.6 better!
+You can download it from [http://pgpool.net/mediawiki/index.php/Developer_releases here].
+=== pgpool-II 3.6 beta1 released (2016/11/02) ===
+pgpool-II 3.6 beta1 is now relased. This is not a stable version but just for developers.
+Users are encouraged to take part in our beta test program. Please help us in testing and making pgpool-II 3.6 better!
+You can download it from [http://pgpool.net/mediawiki/index.php/Developer_releases here].
+=== Pgpool-II 3.6 alpha1 released (2016/10/19) ===
+Pgpool-II 3.6 alpha1 is now relased. This is not a stable version but just for developers.
+V3.6 has a new feature:
+* Improve the behavior of fail-over.
+* New PGPOOL SET command has been introduced.
+* Watchdog is significantly enhanced.
+* Handling of extended query protocol (e.g. used by Java applications) in streaming replication mode speeds up if many rows are returned in a result set.
+* Import parser of PostgreSQL 9.6.
+* In some cases pg_terminate_backend() now does not trigger a fail-over.
+* Change documentation format from raw HTML to SGML.
+* etc.
+You can download it from [http://pgpool.net/mediawiki/index.php/Developer_releases here].
+=== pgpool-II 3.5 RC1 released (2016/1/14) ===
+pgpool-II 3.5 RC1 and pgpoolAdmin 3.5 RC1 are now relased. This is not a stable version but just for developers.
+You can download it from [http://pgpool.net/mediawiki/index.php/Developer_releases here].
+=== pgpool-II 3.5 beta1 released (2015/12/14) ===
+pgpool-II 3.5 beta1 and pgpoolAdmin 3.5 beta1 are now relased. This is not a stable version but just for developers.
+Users are encouraged to take part in our beta test program. Please help us in testing and making pgpool-II 3.5 better!
+You can download it from [http://pgpool.net/mediawiki/index.php/Developer_releases here].
+=== pgpool-II 3.5 alpha1 released (2015/11/16) ===
+Pgpool-II 3.5 alpha1 is now relased. This is not a stable version but just for developers.
+V3.5 has a new feature:
+* Improved performance in extended query protocol
+* Overcoming the thundering herd problem
+* watchdog feature enhancements to be more robust and adaptable
+* PCP command enhancements
+* Import PostgreSQL 9.5 parser
+* etc.
+You can download it from [http://pgpool.net/mediawiki/index.php/Developer_releases here].
+=== pgpool-II 3.3 RC1 released (2013/07/25) ===
+Pgpool-II 3.3 RC1 is now relased. This is not a stable version but just for developers.
+You can download it from [http://pgpool.net/mediawiki/index.php/Developer_releases here].
+=== pgpool-II 3.3 beta1 released (2013/06/12) ===
+Pgpool-II 3.3 beta1 is now relased. This is not a stable version but just for developers.
+Users are encouraged to take part in our beta test program. Please help us in testing and making pgpool-II 3.3 better!
+You can download it from [http://pgpool.net/mediawiki/index.php/Developer_releases here].
+=== pgpool-II 3.3 alpha1 released (2013/05/17) ===
+Pgpool-II 3.3 alpha1 is now relased. This is not a stable version but just for developers.
+V3.3 has a new feature:
+* Enhancements for watchdog
+** New monitoring method of watchdog lifecheck using heartbeat signal
+** Interlocking of failover/failback script
+** Secure watchdog communication
+** etc.
+* Othres
+** Import PostgreSQL 9.2 raw parser
+** New pgpool_setup tool
+** Support for using CREATE EXTENSION to install pgpool specific extensions
+You can download it from [http://pgpool.net/mediawiki/index.php/Developer_releases here].
+== Old ==
+See [[Old news|this page]].
+= Where can I get commercial support for pgpool-II? =
+Some commercial packages include pgpool-II support. Consulting and annual support can be purchased from SRA OSS, Inc. Japan (http://www.sraoss.co.jp/index_en.php).

Pgpool-II 4.1 development and Main Page: Difference between pages

Revision as of 09:27, 19 November 2019

Welcome to Pgpool Wiki!

What is Pgpool-II?

Pgpool-II License

Stable versions

Contacts

What's new

News

Pgpool-II 4.1.0, 4.0.7, 3.7.12, 3.6.19, 3.5.23 and 3.4.26 RPMs Update 2 officially released (2019/11/19)

Events

PGConf.ASIA 2019 in Bali

PGConf.ASIA 2018 in Tokyo

PGConf.ASIA 2017 in Tokyo

PostgreSQL Conference in Russia 2016

PostgreSQL Conference in China 2015

pgCon 2015 Cluster Hacker Summit

Pgpool-II Day 2015 in Tokyo

New docs

pgpool-II 3.5 is coming soon!

Stable

Pgpool-II 4.1.0, 4.0.7, 3.7.12, 3.6.19, 3.5.23 and 3.4.26 RPMs Update 2 officially released (2019/11/19)

Pgpool-II 4.1.0 released (2019/10/31)

Pgpool-II 4.0.7, 3.7.12, 3.6.19, 3.5.23 and 3.4.26 officially released (2019/10/31)

Pgpool-II 4.0.6, 3.7.11, 3.6.18, 3.5.22 and 3.4.25 officially released (2019/08/15)

Pgpool-II 4.0.5, 3.7.10, 3.6.17, 3.5.21 and 3.4.24 officially released (2019/05/16)

Pgpool-II 4.0.4, 3.7.9, 3.6.16, 3.5.20 and 3.4.23 officially released (2019/03/29)

Pgpool-II 4.0.3, 3.7.8, 3.6.15, 3.5.19 and 3.4.22 officially released (2019/02/21)

pgpoolAdmin 4.0.1 officially released (2018/12/20)

Pgpool-II 4.0.2, 3.7.7, 3.6.14, 3.5.18 and 3.4.21 officially released (2018/11/22)

Pgpool-II 4.0.1, 3.7.6, 3.6.13, 3.5.17 and 3.4.20 officially released (2018/10/31)

Pgpool-II 4.0.0 and pgpoolAdmin 4.0.0 officially released (2018/10/19)

Pgpool-II 3.7.5, 3.6.12, 3.5.16, 3.4.19 and 3.3.22 officially released (2018/07/31)

Pgpool-II 3.7.4, 3.6.11, 3.5.15 and 3.4.18 officially released (2018/06/12)

Pgpool-II 3.7.3, 3.6.10, 3.5.14, 3.4.17 and 3.3.21 officially released (2018/04/17)

Pgpool-II 3.7.2-2 RPMs are released. (2018/03/14)

Pgpool-II 3.7.2, 3.6.9, 3.5.13, 3.4.16 and 3.3.20 officially released (2018/02/13)

pgpoolAdmin 3.7.1 officially released (2018/02/05)

Pgpool-II 3.7.1, 3.6.8, 3.5.12, 3.4.15 and 3.3.19 officially released (2018/01/09)

Pgpool-II 3.7.0 and pgpoolAdmin 3.7.0 officially released (2017/11/22)

Pgpool-II 3.6.7, 3.5.11, 3.4.14 and 3.3.18 officially released (2017/11/01)

Pgpool-II 3.6.6, 3.5.10, 3.4.13, 3.3.17 and 3.2.22 officially released (2017/09/05)

Pgpool-II 3.6.5, 3.5.9, 3.4.12, 3.3.16 and 3.2.21 officially released (2017/07/11)

Pgpool-II 3.6.4, 3.5.8 officially released (2017/05/11)

Pgpool-II 3.6.3, 3.5.7, 3.4.11, 3.3.15, 3.2.20 and pgpoolAdmin 3.6.1 officially released (2017/04/28)

Pgpool-II 3.6.2, 3.5.6, 3.4.10, 3.3.14 and 3.2.19 officially released (2017/03/17)

pgpoolAdmin 3.6.0 officially released (2017/02/28)

pgpool-II 3.6.1, 3.5.5, 3.4.9, 3.3.13, 3.2.18 and 3.1.21 officially released (2016/12/26)

pgpool-II 3.6.0 officially released (2016/11/21)

pgpool-II 3.5.4, 3.4.8, 3.3.12, 3.2.17 and 3.1.20 officially released (2016/08/31)

pgpool-II 3.5.3, 3.4.7, 3.3.11, 3.2.16, 3.1.19, and pgpoolAdmin 3.5.3 officially released (2016/06/17)

pgpool-II 3.5.2, 3.4.6, 3.3.10, 3.2.15, 3.1.18, and pgpoolAdmin 3.5.2 officially released (2016/04/26)

pgpool-II 3.5.1, 3.4.5, 3.3.9, 3.2.14, 3.1.17, and pgpoolAdmin 3.5.1 officially released (2016/04/04)

pgpool-II 3.4.4, 3.3.8, 3.2.13, 3.1.16, and 3.0.20 officially released (2016/02/05)

pgpool-II 3.5.0 and pgpoolAdmin 3.5.0 officially released (2016/01/29)

pgpool-II 3.4.3, 3.3.7, 3.2.12, 3.1.15, and 3.0.19 officially released (2015/07/24)

pgpool-II 3.4.2, 3.3.6, 3.2.11, 3.1.14, and 3.0.18 officially released (2015/04/08)

pgpool-II 3.4.1, 3.3.5, 3.2.10, 3.1.13, 3.0.17 and pgpoolAdmin 3.4.1 officially released (2015/02/05)

The pgpool-II official yum repository released (2014/12/16)

pgpool-II 3.4.0 and pgpoolAdmin 3.4.0 officially released (2014/11/07)

pgpool-II 3.3.4, 3.2.9, 3.1.12, and 3.0.16 are officially released (2014/09/05)

pgpool-ha 2.2 released (2014/04/01)

pgpool-II 3.3.3, 3.2.8, 3.1.11, 3.0.15 and pgpoolAdmin 3.3.1 officially released (2014/03/24)

pgpool-II 3.2.7, 3.1.10, 3.0.14 officially released (2013/12/06)

pgpool-II 3.3.2 officially released (2013/11/29)

pgpool-II 3.3.1, 3.2.6, 3.1.9, 3.0.13 officially released (2013/09/06)

Missing regression test suite in pgpool-II 3.3.0.tar.gz (2013/07/31)

pgpool-II 3.3 and pgpoolAdmin 3.3 officially released (2013/07/30)

pgpool-II 3.2.5, 3.1.8, 3.0.12 officially released (2013/07/10)

Development

Pgpool-II 4.1 RC1 released (2019/10/16)

Pgpool-II 4.1 beta1 released (2019/09/06)

Pgpool-II 4.0 RC1 released (2018/10/03)

Pgpool-II 4.0 beta1 released (2018/09/19)

Pgpool-II 4.0 alpha2 released (2018/09/06)

Pgpool-II 4.0 alpha1 released (2018/08/20)

Pgpool-II 3.7 RC1 and pgpoolAdmin 3.7 RC1 released (2017/11/13)

Pgpool-II 3.7 beta1 released (2017/10/17)

pgpool-II 3.6 RC1 released (2016/11/16)

pgpool-II 3.6 beta2 released (2016/11/08)