Bug #24200
closed
?1234567 on included CSS and JS breaks browser cache
0%
Description
Since Typo3 4.4, the CSS and JavaScript files that are included by typo3 get "?1234567" (number varying) attached. Real exmples:
<link rel="stylesheet" type="text/css" href="typo3temp/stylesheet_fb20638762.css?1290624400" media="all">
<script src="typo3conf/ext/jquerycolorbox/res/js/jquery.js?1290624128" type="text/javascript"></script>
The problem with this: Firefox (and maybe also other browsers) interpret the ?1234567 as querystring and think it's a dynamic file.
The result is that the browser sends a request for all those files to the server on every page you load. Of course it will nearly always get a "403 not modified" response, but it still hurts performance without a real need.
I'd strongly recommend to remove the ?1234567 suffix again.
1. go to a page that is using Typo3 4.4 or newer
2. click any internal link (say: imprint)
3. click another internal link (say: contact)
4. login on the server and start watching the apache access log - or - use the network monitor of Firebug
5. click on the first used internal link (imprint) again
Expected result:
- all files are cached
- only the HTML is requested from the server
Actual result:
- the browser re-requests all CSS and JS files that have ?1234567 attached
(issue imported from #M16562)
Updated by Jigal van Hemert almost 14 years ago
You can remove those suffixes yourself by a setting in the Install Tool:
-----------------------------------------------
[versionNumberInFilename]
Boolean: If true, included CSS and JS files will have the timestamp embedded in the filename, ie. filename.1269312081.js. This will make browsers and proxies reload the files if they change (thus avoiding caching issues). IMPORTANT: this feature requires extra .htaccess rules to work (please refer to misc/advanced.htaccess or the _.htaccess file from the dummy package)If false the filemtime will be appended as a query-string.
[BE][versionNumberInFilename] = 0
-----------------------------------------------It's not active by default because of the .htaccess rules which are needed.
If the option is not active the suffix is still useful for server side caching of merged and possibly compressed CSS/JS files.
Updated by