Cache-Control Extension

Creator

Creator

Seonglae Cho

Created

Created

2021 Jun 3 2:43

Editor

Editor

Seonglae Cho

Edited

Edited

2025 Nov 3 19:18

Refs

Refs

Cache-Control stale-while-revalidate


Cache-Control: stale-while-revalidate=59


Cache-Control: immutable
Cache-Control: stale-while-revalidate=<seconds>
Cache-Control: stale-if-error=<seconds>

Keeping things fresh with stale-while-revalidate

An additional tool to help you balance immediacy and freshness when serving your web app. stale-while-revalidate helps developers balance between immediacy- loading cached content right away-and freshness- ensuring updates to the cached content are used in the future.

https://web.dev/stale-while-revalidate/

Keeping things fresh with stale-while-revalidate

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