MediaWiki supports use of expensive data queries and page templates, meaning it can take noticeable time to process uncached pages. To mitigate these costs, MediaWiki administrators should set up relevant caches.

• Manual:Performance tuning - How to configure your web server and MediaWiki installation to improve performance.
• Manual:Object cache - Technical documentation: How object caching is used inside MediaWiki
  • Manual:Parser cache - How the rendered output of a wiki page is cached with ParserCache and how RevisionOutputCache is used for old revisions of a page.
  • Interwiki cache - Interwiki caching explained.

See also

• Manual:Configuration settings
• wikitech:Performance/Guides/Backend performance practices
• Wikimedia servers
• Manual:File cache - Optional simplistic scheme for caching the rendered HTML of article pages.
• Manual:Varnish caching
• Manual:CloudFlare
• How do I purge a cached page?
• How do I completely disable caching?