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Percona Software for PostgreSQL Documentation

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Percona Server for PostgreSQL

Percona Server for PostgreSQL is a binary-compatible, open source drop-in replacement for PostgreSQL 17. It introduces additional features on top of the upstream server, including:

  • Storage Manager (SMGR) API Exposure: Allows PostgreSQL extensions to integrate custom storage managers. This change was inspired by the patchset introduced to the community.
  • WAL Read/Write API Exposure: Allows extensions to hook into WAL read and write functions.

These changes do not affect existing use cases and PostgreSQL behavior. They enable additional encryption features, such as index-level and Write-Ahead Logging (WAL) encryption, through the pg_tde extension.

Percona Server and the upstream PostgreSQL operate identically, making migrations between the two straightforward.

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Note

The PostgreSQL Compatibility Index (PCI) test suite reported 100% compatibility. PCI validates behavioral equivalence by running a suite of compatibility checks against upstream PostgreSQL.

These results were obtained using Percona Server for PostgreSQL 17.6.1 . View the PCI test results here .