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freddiefujiwra
Asked: 2011-02-10 00:03:55 +0800 CST

What is the Expire on apache httpd.conf

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I'd like to set the following:

ExpiresActive On
ExpiresByType application/x-flash-swf  "access plus 1 days"
ExpiresByType application/x-shockwave-flash  "access plus 1 days"
<FilesMatch "\.swf$">
 Header set Cache-Control "public"
</FilesMatch>

but I usually set on html

<embed src="http://example.com/flash/example.swf?YYYYMMDDSS" />

What is the difference YYYYMMDDSS and Expires(mod_expires)?

apache-2.2 swf

2 Answers

  1. What is the difference YYYYMMDDSS and Expires(mod_expires)?

    mod_expires sets the headers in the HTTP protocol, and most caching servers which follow the HTTP specs do exactly what you request with the correct headers.

    Using a query parameter with a date as part of a URL, and thus the corresponding GET request doesn't set any expiration. You are depending on the browser to operate the way you expect. This is a bit of a hack and is somewhat uncommon, but I suspect it works.

    You can do both if you like.

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  2. "YYYYMMDDSS" will not be cached proxy server.

    You can manual update user cache, change "YYYYMMDDSS".

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