Robert Denison wrote:
Thanks peter,

Don't suppose anyone can point me to any documentation that talks about getting 
caching working properly for tomcat and static content can they?

A good caching tutorial is http://www.mnot.net/cache_docs/

The best site for web performance in general is http://developer.yahoo.com/performance/rules.html

Tools for checking these rules are YSlow (http://developer.yahoo.com/yslow/) and http://www.webpagetest.org/

The most important rules are

   * Reduce number of requests (by consolidating scripts, style sheets
     and images),
   * Reduce data volume (e. g., by compression),
   * Allow re-use by caching,
   * Keep persistent connections,
   * Avoid sending cookies for static objects.

If you have to serve users in a different continent than where your servers are, you should also think about using a CDN.

Persistent connections are especially important with SSL, because SSL connection setup is expensive.

Regards,

Oliver Schoett



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