Middleware

HAProxy

A runnable HAProxy configuration for a three-node Patroni cluster - mode tcp, Patroni HTTP health checks, timeouts for long-lived sessions, and draining.

Read the HAProxy guide

Concepts it implements

Backpressure

A saturated component signals upstream to slow down, rather than accepting work it cannot complete.

Where HAProxy sits

How this component relates to the rest of the stack. Items without a link are not covered here yet.

Depends on

Must be present for this to run

Linux

Deployed with

Commonly run alongside

Alternatives

Solves a similar problem differently

nginx
Envoy
Pgpool-II

HAProxy release support

6 supported

Release	Latest	Released	End of life	Status
`3.4`LTS	`3.4.6`	Jun 2026	Apr 2031	Supported
`3.3`	`3.3.16`	Nov 2025	Jan 2027	Supported
`3.2`LTS	`3.2.25`	May 2025	Apr 2030	Supported
`3.1`	`3.1.17`	Nov 2024	Jan 2026	End of life
`3.0`LTS	`3.0.29`	May 2024	Apr 2029	Supported
`2.9`	`2.9.15`	Dec 2023	Mar 2025	End of life
`2.8`LTS	`2.8.30`	May 2023	Apr 2028	Supported
`2.7`	`2.7.12`	Dec 2022	Apr 2024	End of life
`2.6`LTS	`2.6.34`	May 2022	Apr 2027	Supported
`2.4`LTS	`2.4.36`	May 2021	Apr 2026	End of life
`2.2`LTS	`2.2.34`	Jul 2020	Apr 2025	End of life
`2.0`	`2.0.35`	Jun 2019	Apr 2024	End of life

Data as of 2026-10-01 from endoflife.date. Refresh with node scripts/fetch-versions.mjs.