HAProxy

HAProxy is optimized for speed and efficiency, handling massive traffic loads with minimal resource usage, as highlighted in its key features and reliability focus.

Includes built-in health checks, failover mechanisms, and redundancy features to maintain service continuity, ensuring reliability for critical applications.

Works with both TCP and HTTP protocols, offering versatility for various application types, from web services to database connections.

Supports Lua scripting and SPOE for custom processing, enabling advanced use cases beyond standard load balancing, as documented in the README's Lua and SPOE guides.