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feat: cache etag support #3758

Merged
merged 5 commits into from
Nov 18, 2024
Merged

feat: cache etag support #3758

merged 5 commits into from
Nov 18, 2024

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flakey5
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@flakey5 flakey5 commented Oct 21, 2024

Re http caching, adds support for etags for when we need to revalidate a cached response.

No breaking changes to the public api. the etag property is nullable so a cache store could just not implement it and it will be fine. However, I did add it to the tests as if it was required just so we can ensure the builtin cache stores fully support the behavior.

This only checks if the etag exists in the response's headers and ignores it if it's in the trailers for simplicity sakes (as allowed by the spec in 8.8.3)

Closes #3718

@mcollina
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I think this is a bit too light on tests, and I'm not sure if this implementation is correct.

Can you add some tests where the response is a 304 thanks to if-none-match?

@SukkaW
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SukkaW commented Oct 24, 2024

I think this is a bit too light on tests, and I'm not sure if this implementation is correct.

Can you add some tests where the response is a 304 thanks to if-none-match?

Also, we could test how undici responds to different server implementations. I myself have run into situations when locally stored strong ETag matches the server-sent one yet the server is returning the same ETag with 200 instead of 304.

@flakey5 flakey5 force-pushed the flakey5/3718 branch 2 times, most recently from d914909 to 9eeff6c Compare November 17, 2024 19:01
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lgtm

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@flakey5 this now conflicts

flakey5 and others added 4 commits November 18, 2024 11:34
Signed-off-by: flakey5 <[email protected]>
Signed-off-by: flakey5 <[email protected]>
Signed-off-by: flakey5 <[email protected]>
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lgtm

@mcollina mcollina merged commit a73fd09 into nodejs:main Nov 18, 2024
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Easier way to attach ETag to If-None-Match after #3562
6 participants