Eric Lawrence, creator of Fiddler, put together an excellent post about issues with setting the max-age Cache-Control setting for too far in the future. Remember, setting max-age correctly in the Cache-Control header can improve web performance by instructing...

Lots of fantastic improvements are coming to ASP.NET 4 with regards to client web performance. You can be sure that checks for these will be added to future neXpert versions! Permanent Redirection (ASP.NET 4) Using Response.Redirect will cause a HTTP...

Only a minor update for neXpert which allows it to continue to work with the latest version of Fiddler. Fiddler version 2.2.4.5 is required.  Currently this is the BETA release on http://www.fiddler2.com/Fiddler2/version.asp Download here: http:...

The creator of neXpert, Eric Mattingly, will be at Velocity Conference this week presenting.  If you are attending, seek him out and share your experiences with the tool!  Also check out his session on Wednesday afternoon, Creating Instant Response...

My colleague on the ACE Performance Team, Vitaliy Konev, recently posted a blog post and video discussing how to set up Fiddler on a web server as a reverse proxy.  This is how you would capture HTTP traffic when you are not using a web browser client...

One of the best features of Fiddler when performance testing is it’s ability to save a capture as a Visual Studio Web Test.  You can then use this web test to functional test or stick it in a load test to stress test your site. The latest version...

There is a fantastic post over at Scott Hanselman's Computer Zen where he discusses some of the performance improvements put into the newest version of MSDN. Specifically their performance team made the following changes: Moved CSS/JS around on different...

neXpert v1.1 introduces many different ExecAction listeners for both general Fiddler actions and some neXpert specific actions. Command Action Sample Usage       loadsaz filename Load a SAZ file into Fiddler. loadsaz c:\blog.saz savesaz...

A new version of neXpert (1.1) is now available on Microsoft Download Center. This release contains bug fixes, wording-changes as well as the addition of general and neXpert specific ExecAction listeners. The main fix is for a nasty localization issue...

John Hrvatin, a lead program manager on the Internet Explorer team, presented "Building High Performance Web Applications and Sites” at this years MIX.  In the talk he goes over many different aspects of web performance including: CSS performance...

This rundown should help when using Fiddler for performance testing to perform captures correctly the first time. If you have any feedback or additions to this list, please send them using the “Contact Us” link in the top left corner of the web page....

The response time predictions currently bundled with neXpert are still considered “Beta”. For applications which are already lean (10 round trips or less) they work quite well. Once you get into complex applications with features such as multiple hosts...

What is it? neXpert is an add-on to Fiddler Web Debugger which aids in performance testing web applications. neXpert was created to reduce the time it takes to look for performance issues with Fiddler and to create a deliverable that can be used to...

This page contains all known issues as well as the current workaround with the most current release of neXpert on Microsoft Download Center. (Version 1.1 ) The goal is to have any issues fixed in a timely manner. If you think you have found an issue...