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Tech riderRev. 1 Oct 2026

Pgpool-II

Ch 106.7of 30 Database Proxy Software
  1. 1Runs onLinux, self-hosted
  2. 2CostsFree plan
  3. 3Deployment modelself-hosted
  4. 4Connection poolingYes
  5. 5Query routingYes
  6. 6Load balancingYes
  7. 7Automatic failoverYes
  8. 8Supported databasesPostgreSQL
8 lines stated Written from the maker's own pages: pgpool.net
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The Pgpool-II homepage

Overview

Pgpool-II is ranked #10 of 30 in database proxy software on Specifiction. It runs on Linux, Self-hosted. There is a free plan.

Pgpool-II plans and pricing

All plans
Pgpool-II Free open-source software · self-hosted middleware pgpool.net · 1 Oct 2026

Compared on database proxy software

Free plan
Yespgpool.net
Deployment model
self-hostedpgpool.net
Connection pooling
Yespgpool.net
Query routing
Yespgpool.net
Load balancing
Yespgpool.net
Automatic failover
Yespgpool.net
Supported databases
PostgreSQLpgpool.net

Facts

Purpose
Pgpool-II is middleware between PostgreSQL servers and database clients that relays PostgreSQL protocol messages transparently.pgpool.net · 1 Oct 2026
High availability
It provides automatic failover, Watchdog for Pgpool-II high availability, quorum, and split-brain prevention.pgpool.net · 1 Oct 2026
Additional features
Additional features include in-memory query cache, online recovery, connection limiting, Watchdog, and replication.pgpool.net · 1 Oct 2026
License
The license permits use, copying, modification, and distribution of the software and documentation for any purpose without a fee.pgpool.net · 1 Oct 2026
Distribution
Pgpool-II is available as binary and source formats; the project provides RPM packages for Red Hat Enterprise Linux and compatible distributions.pgpool.net · 1 Oct 2026
APT packages
Users of Debian or Ubuntu are directed to packages provided by the PostgreSQL community.pgpool.net · 1 Oct 2026
Authentication
Supported authentication methods include trust, clear-text password, MD5, SCRAM-SHA-256, certificate, PAM, and LDAP; GSSAPI is not supported.pgpool.net · 1 Oct 2026
SSL
When enabled, SSL protects both frontend and backend communications, but it is off by default and requires OpenSSL support.pgpool.net · 1 Oct 2026
Support
Community support is provided through mailing lists and GitHub Issues, while SRA OSS K.K. offers commercial technical support, consulting, and system integration.pgpool.net · 1 Oct 2026
Security reporting
The community asks vulnerability reporters to email the project leader privately and does not offer bug bounties.pgpool.net · 1 Oct 2026
Release support
The project aims to fully support each major release for five years; unsupported releases receive only possible best-effort critical fixes and no formal binary packages.pgpool.net · 1 Oct 2026
Documentation
Official documentation is available in English and Japanese, with tutorials for basic configuration, Watchdog, AWS, and Aurora.pgpool.net · 1 Oct 2026

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