We have moved: opensource.eyemg.com becomes crunchtools.com

Hello Everyone, I am proud to announce that http://opensource.eyemg.com has officially become part of http://crunchtools.com. When the original open source site was created, it was to facilitate distribution of open source software which had been developed in and around EYEMG’s data ceter. Since then the content has expanded to include a vision of tutorials, software

Browser & Web Server Cache Control Headers 101

Background Caching between a browser and an origin server is controlled by request and response headers . Quite often these headers are misunderstood by users and business owners, so it is important that we as systems administrators and developers understand them well. Secondly, caching can have an impact on web site performance and bandwidth usage.

Browser & Web Server Headers 101

Background Understanding the basic interaction between a web server and a web browser is critical for a beginning systems administrator or web developer. Basically, text is sent back and forth in a way that is specified by the HTTP protocol. Several versions of the protocol exist, but the details are not required to understand the