Haproxy

Skill G1Joshi/Agent-Skills/skills/devops/haproxy

HAProxy load balancer and proxy. Use for high-availability.From its SKILL.md

Install

npx -y skills add G1Joshi/Agent-Skills --skill haproxy

Assembled from the repository path, not quoted from the project. Check it against their README if it does not work.

One thing to look at

12 stars12 stars. Stars are a popularity signal and not a quality one, but at this level it is likely that nobody has read this closely except its author, and you would be relying on your own review.

SKILL.md

1.4 KB, 350 tokens by cl100k_base, as published. Nobody here has run it

HAProxy

HAProxy is the standard for high-performance load balancing. HAProxy 3.0 (2025) adds Syslog Load Balancing and improved HTTP/3 QUIC support.

When to Use

High Traffic: Handling millions of requests per second.
L4 Balancing: TCP proxying for Database replicas, Redis, or non-HTTP protocols.
Advanced Logic: Complex ACLs, rate limiting, and sticky sessions.

Quick Start

frontend http_front
   bind *:80
   default_backend web_servers

backend web_servers
   balance roundrobin
   server web1 10.0.0.1:80 check
   server web2 10.0.0.2:80 check

Core Concepts

Frontend / Backend

Frontend defines how requests enter (ports, certs). Backend defines where they go and how (algorithms, health checks).

ACLs

Access Control Lists. Powerful conditionals. acl is_api path_beg /api use_backend api_servers if is_api

Stick Tables

In-memory storage for tracking events (e.g. rate limiting by IP).

Best Practices (2025)

Do:

Use Data Plane API: For dynamic configuration without reloads.
Enable Prometheus Exporter: Built-in metrics endpoint.
Tune maxconn: Critical for preventing resource exhaustion.

Don't:

Don't use as Web Server: It is a proxy. Use Nginx/Caddy for serving static files.

References

HAProxy Documentation

What ships with it

Read from the repository

Just SKILL.md. No reference files, no scripts.