There are few things more rewarding in site performance than enabling the Output Cache. This will store the ready-generated HTML to be served without executing any WebForms pages or Controller actions and their respective Views for MVC sites. In...

Death by Background Thread Exception (including ThreadPool User Work Items) If you use a thread or ThreadPool.QueueUserWorkItem to run code asynchronously and don’t catch your exceptions inside your WaitCallback, you will bring your entire...

This is another issue that results in Frequent Web Application Restarts, which causes the performance to plunge. Death by Stack Overflow This one is interesting, yet it has nothing to do with StackOverflow.com. The StackOverflowException is one of...

This bug appears only in load-balanced / remote events setups for CMS versions between 7.5 and 9.0.2 (released September 14th 2015, in which it was fixed). It’s reported as bug CMS-1405. This memory leak is relatively slow. Because of the way that...

Last post I discussed why Frequent Web Application restarts are bad. This is an issue that can cause you pain trying to get the application back up running again: Death by IIS Ping IIS’ built-in health monitoring is quite simple, but despite it...