Is server slow? Estimating server endpoint processing time from client perspective

Intro &#xA; Sometimes when I work on some mobile apps I get an issue of having slow response&#xA;times which in turn make the app &ldquo;work slow&rdquo; and all complaints come to me. For&#xA;an app user or business owner it does not matter who is responsible. The app&#xA;works slow so for them &ldquo;whoever developed the app did a bad job&rdquo;. Sometimes it&#xA;is easy to solve by just…