Saving the result of expensive work so the next request can return it instantly.
Last updated ยท Reviewed by Ali Hassan
WordPress caching covers page cache (full HTML), object cache (database queries), and browser cache (static assets). A correctly tuned cache stack drops average response time from 600ms to under 50ms. Misconfigured caches cause logged in users to see other users' data.
Related terms
CDN (Content Delivery Network)
A global network of edge servers that serves your static files from the location closest to each visitor.
Object Cache
A memory store like Redis or Memcached that holds frequently used database query results.
Page Cache
A saved HTML snapshot of each page so PHP and the database do not run on every visit.
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