Simon Willison’s Weblog

Velocity: Forcing Gzip Compression. Almost every browser supports gzip these days, but 15% of web requests have had their Accept-Encoding header stripped or mangled, generally due to poorly implemented proxies or anti-virus software. Steve Souders passes on a trick used by Google Search, where an iframe is used to test the browser’s gzip support and set a cookie to force gzipping of future pages.

# 30th September 2010, 5:45 pm / browsers, gzip, performance, proxies, steve-souders, recovered

The State of Proxy Caching. If you’ve always wondered exactly what intermediate proxies are going to do to your carefully constructed Web application, here’s your answer.

# 21st June 2007, 2:18 pm / caching, http, mark-nottingham, proxies