Recently I worked on an HttpHandler implementation that is serving images from a backend system. Although everything seemed to work as expected it was discovered images were requested by the browser on every page refresh instead of caching the browser them locally. Together with my colleague Bert-Jan I investigated and solved the problem which will be explained in this post.

The past couple of weeks I'm working with Silverlight controls embedded in SharePoint 2007. For one of the controls I need to retrieve the data using the Search Query Web Service. This was working perfectly in the development environment. But when deploying the control to the production environment it didn't work.