HTTP

Tag

Etag

3 resources tagged Etag across methods, status codes, headers, cookies, guides, and glossary.

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Guides

HTTP Headers and Caching: A Practical Guide

Master HTTP caching with Cache-Control, ETag, Last-Modified, and conditional request headers. Learn how to optimize performance with proper cache strategies.

 HTTP Headers

If-Match Header

Learn how the If-Match header makes requests conditional based on ETag matching. Prevent conflicts and lost updates in concurrent editing scenarios.

 HTTP Headers

If-None-Match Header

Learn how the If-None-Match header makes conditional requests using ETags. Avoid downloading unchanged resources and reduce bandwidth with cache validation.