Cache Tester

The document returned by this form should have a unique URL which will enable it to be cached. See also cache-test2 with inline image

By changing the values in the form, you can generate a document with specific Expires and Last-Modified headers. The RFC field refers to the format used to represent time. RFC1123 is preferred but some programs generate RFC850. Agents and servers should understand both formats.

Expires Last Modified RFC Pragma Cache-Control

Expires Last Modified RFC Pragma Cache-Control
Apache will cache the URLs generated by this form; however, Squid cache will not by default (you must comment out "http_stop ?" in squid.conf). Alternatively, you can encode the arguments to the script in PATH_INFO instead of QUERY_STRING, like this:
Expires tonight, modified last night
No expiry, modified last night
No expiry, no last-modified
Expires: 0, modified last night
Expires in 1 minute, modified last night

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