Specifying header requirements


	Warning By default, the proxy caches all objects (including objects with no headers). Websense recommends that you change the default setting only for specialized proxy situations. If you configure the proxy to cache only HTTP objects with Expires or max-age headers, the cache hit rate will be seriously reduced (very few objects have explicit expiration information).

1.	Navigate to the Configure > Protocols > HTTP > Cacheability tab.

2.	In the Required Headers area of the Behavior section, select one of the following:

An Explicit Lifetime Header to cache only HTTP objects with Expires or Cache-Control headers.

A Last-Modified Header to cache only HTTP objects with Expires or Last-Modified headers.

No Required Headers to cache all HTTP objects (no specific headers are required). This is the default.

3.	Click Apply.