HAProxy is an open-source, high availability load balancer that quietly sits in front of any TCP/HTTP service. It's well-known for its efficiency and reliability, and often used to manage the traffic of high-volume and distributed systems. If you're using HAProxy, you may have come across a situation where you're looking through application logs only to realize that you can't find the information you're looking for. For example, maybe you're looking in apache logs trying to isolate the IP of a web…