HTTP API Caching: Mastering Cache-Control, ETag, and Conditional Requests
Slash API server costs and reduce latency with HTTP caching. Learn Cache-Control max-age, s-maxage, stale-while-revalidate, and ETag 304 Not Modified.
The fastest API call is the one that never hits your database. Proper HTTP caching headers instruct CDNs and client browsers when to serve cached responses and when to send conditional If-None-Match validation requests.