6.9.2 Cacheable objects

It does not make sense to cache certain types of objects. For example, it doesn't make sense to cache queries, since the result of a query might change each time for some services. The following rules are used to determine which objects not to cache:

1. Any HTTP URLs that do not use the 'GET' REQUEST_METHOD

2. Any HTTP URLs that use a CGI program denoted by a ``?'' character in the URL, or ``/cgi-bin/'' in the URL.

3. Any HTTP URLs with the Authorization tag in the MIME request header (this is used as a response to ``401'' messages when an HTTP server asks for a password before retrieving a file).

4. Any ``401'' HTTP responses.