Recently, we've started witnessing some strange symptoms on the platform. For example, one of our crucial search components wasn’t loaded on the landing page. It appeared that Varnish couldn’t fetch part of the main page which was esi:included on this page. Some other backoffice sites were loading extremely slowly because those pages were reading some of the details from our other microservices and we found several timeouts on the server. One person even had one 503 error displayed in the browser when searching... The first thought I had was - maybe some AWS errors were to blame (network or load balancers), but I soon realized there were no recent big errors on the AWS, at least not in our region (eu-west-01) and someone else would probably have these problems as well. And still, it continued happening on several random occasions.