This is a quick snippet, a view onto a Statuscake response time graph. A web application had a memory leak, and over multiple days, the response time was building up on instance 1. If instance 2 is queried, the response time is good; instance 1 had the memory leak and would cause the response time to build up.

There is nothing to learn here, but this graph speaks for itself and looks rather beautiful. It shows an extremely rare and very visible error.