RSC caching redirect behavior fix via Vary header #79363
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Fixes #79346
When RSC response is received by the browser for a page, the CDN can cache it and the payload is shown to the user as-is if they close and re-open the tab. This behavior is fixed by adding a
Vary
header to the response and setting it to the valueRSC, Next-Router-State-Tree, Next-Url, Accept-Encoding
so that the response is not cached by the CDN when the user closes and opens the tab again.Demo:
fix.rsc.behaviour.mov