HAProxy

HAProxy is a free, open-source, high-performance TCP/HTTP load balancer and proxy server. It is widely used to distribute incoming network traffic across multiple backend servers to improve reliability, scalability, and performance of web applications. It supports features like SSL termination, health checks, and session persistence.

Also known as: HA Proxy, High Availability Proxy, haproxy, HA-Proxy, HAProxy Load Balancer

Why learn HAProxy?

Developers should learn HAProxy when building scalable web applications that require high availability and efficient traffic management, such as in microservices architectures or high-traffic websites. It is particularly useful for load balancing HTTP/HTTPS traffic, handling failover scenarios, and implementing reverse proxy functionality to offload tasks like SSL encryption from application servers.

Learning Resources

• docs: HAProxy Documentation
• tutorial: DigitalOcean HAProxy Tutorial
• course: HAProxy Academy (Free Courses)
• video: YouTube: HAProxy Explained in 5 Minutes
• book: Book: 'HAProxy Cookbook' by Nick Ramirez