Mediawikie file download cached

Extending MediaWiki with Purge extension is a good idea but it will not work unless you invalidate the existing cache. Instead of extending MediaWiki you may choose to simply add a purge link directly on page. This can been done by modifying MediaWiki:Sidebar page. Add the following to create a link:. These are temporary solutions. MediaWiki is not great at managing cache. So, for long term solutions, you should consider either of following options or may be both :.

I hope this showed you the way on how to clear MediaWiki cache. For example, adding or removing a page from a category doesn't update the category page, causing not logged in users to not see the changes in the category page. This covers the majority of requests to the wiki, but it is still important to set up bytecode and application caching to handle the rest. If the file is at least as new as both of these, it is considered valid and is sent directly to the client.

If it is older or does not exist, parsing and rendering continues and the results are saved for future use. Individual pages are invalidated by updating their page. This should be done on article creation, edit saves, renames, and creation and deletion of linked articles in order to update edit links. There should probably be some method of expiration of cache pages, particularly for pages containing variables it is X date, we have X articles, etc.

There is no provision to set an expiry time, so all HTML for all pages is cached forever. An explicit? It is possible to add a tab to force one individual page to be invalidated and refreshed by using?

Optionally, the cache may be compressed to save space and bandwidth. This requires that zlib be enabled in the PHP config. If compression is enabled, the cache files are saved as. Filenames are MD5 -hashed, and since many filesystems don't handle large directories well, uploads are broken into subdirectories with the first and first two hex digits of the hash, e. Security note: Even though the upload system contains a filetype blacklist , you should ensure that your webserver is not configured to execute PHP or CGI scripts in the upload directory, just in case.

Other filetypes may be unsafe downloads for some client systems. Again, hash subdirs are used:. These are dumped in a web-accessible LocalSettings. These files just accumulate, and are not automatically removed if the equations they represent are removed from articles or existed only during preview rendering. The images can be manually deleted, since the wiki can regenerate them, but if you do you'll want to fix the database as well:.

Optionally, rendered HTML pages may be kept in a cache directory and served to anonymous visitors. Logged-in users don't benefit from this cache because their page contains user name, selected skin, etc.

This causes the rendered HTML webpage for each page of the wiki to be stored in an individual file on the hard disk. Any subsequent requests from anonymous users are met not by rendering the page again, but by simply sending the stored HTML version which is on the disk.

This saves time. These files will be created as users visit articles on the wiki; you can create them all in one go with the rebuildFileCache. The file cache tends to cache aggressively; there is no set expiry date for the cached pages and pages are cached unconditionally even if they contain variables, extensions and other changeable output.

Some extensions disable file cache for pages with dynamic content. For larger sites, the use of an external cache such as Squid or Varnish is preferable to enabling the file cache. If the file cache appears not to be working, make sure that the webserver has permission to write to the directory you chose. The file names of the cache files are determined by the according page titles.

Depending on the language, which is used in the page titles, some characters in the file names will have to be encoded in order to make up a valid file name for the according file system. This is a known limitation. See task T Category and image description pages aren't purged from file cache.