HAProxy
HAProxy is a free, very fast and reliable reverse-proxy offering high availability, load balancing, and proxying for TCP and HTTP-based applications. HAProxy logs are a great candidate for surfacing a bird’s eye view of activity in your service.
How it works
HAProxy logs can be an incredibly powerful, high-level view of your system—especially when enriched with custom, application-specific information about each request.
Using Honeycomb’s honeytail agent, you can send your HAProxy logs to Honeycomb.