Guide

Concepts and learning path

Troubleshooting

Failure modes and fixes

Cheatsheet

Commands to keep handy

HAProxy

HAProxy is a TCP and HTTP load balancer and reverse proxy built for high availability and performance. It distributes traffic across backend servers, terminates TLS, and performs health checks. Misconfigured backends, ACL rules, and bind addresses are common sources of downtime in production.

Practice scenarios

Hands-on HAProxy scenarios on live Linux VMs: haproxy

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