On Sat, 13 Sep 2008 08:13:51 +0100, "dave selby" <[EMAIL PROTECTED]> wrote:
>2008/9/12 Scott Gifford <[EMAIL PROTECTED]>: >> "dave selby" <[EMAIL PROTECTED]> writes: >> >>> Is there a way for me to turn off if-modified-since so the client >>> browser will ALWAYS use its locally cached document >> >> Dave, >> >> Usually sending an Expires header will tell browsers to mostly use a >> cached version. I use something like this to set my expires time to >> quite a bit in the future: >> >> <Directory /path/to/dir> >> ExpiresActive On >> ExpiresDefault A86400000 >> </Directory> >> >> This is part of mod_expires: >> >> http://httpd.apache.org/docs/2.0/mod/mod_expires.html >> >> Also, it would really surprise me if Apache used the parent directory >> in deciding about IMS requests. You might want to do some simple >> experiments to verify this is what it's doing. > >Thank you, thats useful. Something odd is definitely happening. > >That part of my app as of last night is in pieces (joys of software >development) but I am hopeing to rebuild it over the next couple of >days. I will do some experiments & repost here. Just out of curiosity, I looked up Etags on wikipedia -- most interesting, in relation to caching, and what apache uses for generation and comparison. In short etags are like a cookie.. for changed/unchanged content, and is used in combination with the date-time stamp, with preference given for the e-tag Z(different e-tag = different content)... changing the inode of a file changes the e-tag... Apache has mechanisms for controlling etag generation... Re: http://en.wikipedia.org/wiki/HTTP_ETag http://www.iwaw.net/04/Clausen.pdf -- (paragraph: 10)towards the end... (worth reading the whole thing) -- details are a little buried, pointing toward further research in Apache docs/code. --------------------------------------------------------------------- The official User-To-User support forum of the Apache HTTP Server Project. See <URL:http://httpd.apache.org/userslist.html> for more info. To unsubscribe, e-mail: [EMAIL PROTECTED] " from the digest: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
