https://apicourse.com/tags/caching/ Recent content in Caching on API Course Hugo en-us Sat, 02 May 2026 00:00:00 +0000 https://apicourse.com/http-caching-for-apis-cache-control-etags-and-conditional-requests/ Sat, 02 May 2026 00:00:00 +0000 https://apicourse.com/http-caching-for-apis-cache-control-etags-and-conditional-requests/ <p>Caching is one of the highest-leverage performance improvements available to an API, and one of the least consistently implemented. A response that is cached at the right layer — in a CDN, a reverse proxy, or the client itself — eliminates a server round trip entirely. At scale, that elimination compounds: fewer database queries, lower infrastructure cost, faster responses for every consumer. The HTTP specification provides a complete, standardized caching system. Most APIs use it only partially, leaving significant headroom unrealized.</p>