@slightlylate Perf question: Is there any reason for Service Worker over/together with "Cache-Control: immutable" for immutable asset files?
The result is a broken app (particularly on a flaky network or offline). SW+Cache let you *know* all assets are there
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That's the key to a reliably fast experience.
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Otherwise the network is (sometimes, maybe) in the critical path and experience can appear broken.
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& Web Standards TL; Blink API OWNER
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