Tag Name hierarchy_stoplist
Usage hierarchy_stoplist words

Description
A list of words which, if found in a URL, cause the object to be handled directly by this cache. In other words, use this when to query neighbor caches for certain objects. This option can be listed multiple times. As some times this functionality is affected by the directive never_direct, See also never_direct.

Default hierarchy_stoplist cgi-bin ?

Squid will fetch URL’s containing ‘cgi-bin’ or ‘?’ from the origin servers directly without communicating with cache peers.

Example
hierarchy_stoplist jsp asp

If the URL contains the words jsp and asp, which indicate dynamic pages, then Squid will not query peers for the pages and will directly request the origin server.

Note
It is recommended to include all dynamic pages in this tag.