# haproxy/haproxy

HAProxy Load Balancer's development branch (mirror of git.haproxy.org)

Repository: https://github.com/haproxy/haproxy
Canonical: https://ross.abutalabs.com/products/haproxy
Homepage: https://git.haproxy.org/
Language: C
License: NOASSERTION
License Family: other
Topics: haproxy, load-balancer, reverse-proxy, proxy, http, http2, cache, fastcgi, high-availability, https, ipv6, proxy-protocol, ddos-mitigation, tls13, high-performance, caching
Last push: 2026-08-26T16:59:47+00:00

## Health v2 (maintenance only)
Score: 77/100 (v2, computed 2026-09-02T17:46:02.011165+00:00)
- activity 99, release rhythm 35, longevity 100
- inputs: {"age_days": 3068, "days_push": 7, "days_rel": null, "gap_med": null, "n_releases_24m": 0}
- flags: no_releases, no_license
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 6809, forks 965 (observed 2026-08-28T04:09:48.759311+00:00)

## What it is
HAProxy is a fast, reliable open-source reverse proxy and load balancer for TCP and HTTP-based applications, providing high availability, TLS termination, caching, and proxying. It is written in C and widely used in production for high-performance traffic distribution.

## Use cases
- load balance traffic across multiple backend servers
- terminate TLS/HTTPS for web applications
- set up a reverse proxy in front of HTTP services
- mitigate DDoS and rate-limit abusive clients
- achieve high availability for TCP services
- proxy HTTP/2 and IPv6 traffic
- cache responses at the edge

## When to choose
- you need battle-tested, high-performance load balancing for TCP or HTTP
- you want TLS termination, health checks, and high availability in one tool
- you need fine-grained traffic control, ACLs, and rate limiting
- you are running production infrastructure that demands reliability

## When to avoid
- you need a simple static file server or full application server
- you want a lightweight proxy for a single small service where a simpler tool suffices
- you need layer-7 features tied to a specific ecosystem like Kubernetes ingress with rich CRDs

## Facets
- artifact type: service
- maturity: stable
- function: proxy, caching, security, networking, http-server, middleware
- domain: networking, web-development, infrastructure-as-code, security, performance
- platform: windows, bsd, cross-platform, self-hosted
- tags: load-balancer, reverse-proxy, high-availability, tls, http2, ddos-mitigation, tcp-proxy, proxy-protocol, devops, linux, macos

## Member repositories
- haproxy/haproxy (main) score 77

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:09:48.759311+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-29T17:42:02.150218+00:00, confidence not recorded.
  - readme: https://github.com/haproxy/haproxy (fetched 2026-08-28T04:09:48.759311+00:00, sha 955d04f79730)
- Data as of 2026-08-30T08:39:29.467469+00:00.