WordPress Caching Explained

Caching reduces repeated work, but it cannot compensate for every slow plugin, script or oversized asset.

Practical checklist

• Use page caching where compatible.
• Use browser caching for static assets.
• Understand when logged-in or dynamic pages need different treatment.
• Do not stack multiple caching layers blindly.
• Purge caches after meaningful site changes.

Measure the complete page

Performance work should be validated on representative pages after your normal plugins, scripts and content are present.