Squid freenode helper!

hi guys, How to control the cache's life time by urls? such as, if I visit the url "http://example.com/book/123?delcache", my squid will delete the cache of "http://example.com/book/123" web page.
id_sonic: write a helper app to do it
ie, a snippet of perl that when it sees a URL suffixed fixed with ?delcache, will drop that from the cache
oh, thanks. I will try the helper .