Posted on 2026-03-03 by AppstoniA
Related Open Source
We are pleased to announce the first stable release of Pg_QoS, a PostgreSQL extension that provides Quality of Service (QoS) style resource governance for sessions and queries.
🔹 Project overview
Enforce per-role and per-database limits via ALTER ROLE/DATABASE SET qos.*
- Limit CPU usage by binding the backend to N CPU cores (Linux only); planner integration ensures parallel workers stay within that cap
- Track and cap concurrent transactions and statements (SELECT/UPDATE/DELETE/INSERT)
- Limit work_mem per session
- Fast, reliable cache invalidation across sessions (no reconnect) using a shared epoch mechanism
This makes it easier to ensure fair resource allocation across different workloads running on the same PostgreSQL instance.
🔹 Requirements
- PostgreSQL 15 or newer (officially supported)
- Build toolchain and server headers (pg_config must be available)
- Linux for CPU limiting
🔹 Packages
Native packages are now available for the following distributions:
- Debian 13 (Trixie)
- Ubuntu 24.04 (Noble Numbat)
- Red Hat Enterprise Linux (RHEL) 10
- AlmaLinux 10
- CentOS Stream 10
Packages can be found in the repository releases section and cover all PostgreSQL versions supported by Pg_QoS (15 and newer).
🔹 Repository
https://github.com/appstonia/pg_qos
We welcome comments, suggestions, and contributions from the community.
Pg_QoS is developed and maintained by the Appstonia team.
We'd love to hear your feedback via Github issues.