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Go 1.27 improves HTTP/1 connection reuse
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Go 1.27 improves HTTP/1 connection reuse

The gist

Go 1.27 cuts a 100-request HTTP/1 benchmark from ~710ms to ~150ms.
The change targets connection reuse, so unread response bodies no longer waste connections.

How it unfolded

  1. Oct 14, 2026The Go Blog published "Better HTTP/1 connection reuse" by Nicholas Husin and Damien Neil.
  2. Oct 14, 2026A Hacker News submission titled "Better HTTP/1 connection reuse in Go 1.27" was posted.
  3. Oct 15, 2026An article examined draining unread HTTP/1 response bodies in Go 1.27, testing chunked streams, slow bodies, json.Decoder and forced closes.

Sources

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