Improving performance with browser caching

- Sensei Martin

On requests, check that you are using browser caching.

Last-Modified should be set.

Expires should be set (seems to be dynamically set if max-age is set on cache-control). On cache-control - watch out for must-revalidate - this seems to bypass the cache.

This is not good:- Cache-Control max-age=0

This is OK:- Cache-Control max-age=1800, public, must-revalidate

NB, public is to allow caching on SSL links.

This is BEST:- Cache-Control max-age=18000, public

Are the flash files cached?

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