On Thu, Jun 06, 2002 at 04:11:12PM -0700, Ryan Bloom wrote: > If you delay calling ap_meets_conditions, then you are going to slow > down the server. Think about the easiest case, default_handler and > mod_deflate. The default_handler grabs a file from the disk and sends > it to mod_deflate, which compresses the data. Then, in > ap_http_header_filter, we see that the data hasn't changed, so we send a > Not-Modified-Since response. Now, we have wasted time compressing the > response that was never actually sent.
Yup, the deflate case is especially bad. So, we need to make the decision before the handlers run. > There are only two options in my mind for fixing this correctly. 1) A > directive that essentially tells the server not to check for conditional > GET requests in a given directory/file/location/whatever. 2) A flag > someplace that modules can set to notify the core that it should skip > the check. #1 is wrong because we're clearly violating the RFC on this. #2 seems like r->no_local_copy is the right flag. The problem seems to be where we can set this? -- justin P.S. rbb and I are in irc.openprojects.net #apr tossing around some ideas about where we can stick this check.
