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openedon Jun 7, 2021
@benaadams has a PR that improves writing response headers for HTTP/1.1:
#32337
The same concept can be applied to response headers generated Enumerator
types. These are used when writing HTTP/2 and HTTP/3.
Writing response headers in HTTP/2 is a hotspot. Multiplexing and HPack means that only one response on a connection can write headers at a time while other responses wait on a lock. Reducing the time in the lock is huge.
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