IISxpress 2.5 is now available

IISxpress 2.5 is now available. This release contains the following enhancements:

• Support for BZIP2 compression in addition to the existing deflate and GZIP.
• Support for mixed 32 bit and 64 bit application pools on Windows Server 2008, Windows 7 and Vista.

This release can be downloaded here.

BZIP2 is a compression algorithm that is becoming more popular on the web thanks to support built into Google's Chrome browser. BZIP2 is slower than deflate/GZIP but it is capable of much better results. We recommend using BZIP2 on static content like HTML, JS and CSS files since these files will be compressed and stored in IISxpress's compression cache. If the client browser does not support BZIP2 then IISxpress will revert to the default deflate/GZIP algorithm.

IIS 7 on 64bit Windows Server 2008, Windows 7 and Vista can run in both 32 bit and 64 bit modes. The 'bitness' is specified in the application pool settings, and unlike IIS 6 you can run both 32 bit and 64 bit application pools simulaneously. IISxpress now supports running in this mixed mode environment, simply install the 64 bit version of IISxpress and both 32 bit and 64 bit application pools will be compressed.