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small gateway messages will usually fit into a single websocket frame, making the `extend buffer + decompress + clear` steps pretty unnecessary
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Enegg
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Jun 28, 2026
Enegg
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Half of the review before sleep, half after 👍
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Summary
Adds support for
zstd-streamtransport compression in gateway connections, in addition to the usualzlib-stream, and uses it as the default compression method if available.This uses the builtin
compression.zstdmodule on Python 3.14+, or optionallybackports.zstdon earlier Python versions, which is now also part ofdisnake[speed](would've been included byaiohttp[speedups]already anyway),.At least based on some rudimentary benchmarking and publicly available comparisons, zstd should achieve a little better compression and is a fair bit faster.
Running this branch with two instances of one of my bots in prod at the same time for ~5 minutes, one with each compression mode:
The one minor disadvantage is potentially slightly higher memory usage due to larger lookback buffers, but only to a very limited and negligible degree, especially since it scales linearly with the number of shards.
https://docs.discord.com/developers/events/gateway#zstd-stream
Checklist
uv run nox -s lintuv run nox -s pyright