Issues

• HTTP/3: process-wide send memory has no bound (connections x up to 4 MiB)

  performance
  xuckless/anole#172 · Filter by author xuckless opened on Oct 31, 2026

• Request arenas: Zig 0.17's lock-free ArenaAllocator costs 6-9% of HTTP/2 CPU

  performance
  xuckless/anole#171 · Filter by author xuckless opened on Oct 31, 2026

• kafka: Consumer Host tel pointer read without synchronization

  bug
  xuckless/anole#168 · Filter by author xuckless opened on Oct 31, 2026

• build: test -Dtest-filter makes core-test fail when the filter matches none of its tests

  bug
  xuckless/anole#167 · Filter by author xuckless opened on Oct 31, 2026

• net: C ABI raw TCP listeners get no drain event, connections stay open until timeouts.shutdown

  bug
  xuckless/anole#166 · Filter by author xuckless opened on Oct 31, 2026

• watch: gapAll calls w.gapped() after unlocking the hub, a watch freed in that window is used after free

  bug
  xuckless/anole#165 · Filter by author xuckless opened on Oct 31, 2026

• db: follow-ups from the S1.5 pools retrofit (stale SQLite copies, canceled-but-committed answers, pg double release, Mongo SessionPool)

  bug
  xuckless/anole#160 · Filter by author xuckless opened on Oct 30, 2026
  1

• kafka: flush waits until nothing is pending at all, so other tasks' load can starve it to its timeout

  xuckless/anole#156 · Filter by author xuckless opened on Oct 30, 2026

• SSE topics: RSS stays at ~0.5 GB after a 20-event burst to 50k subscribers

  xuckless/anole#150 · Filter by author xuckless opened on Oct 29, 2026

• HTTP/2 client: the shared connection caps fan-in at about one request per round trip

  xuckless/anole#148 · Filter by author xuckless opened on Oct 29, 2026

• io_uring: the fallback to epoll is silent

  enhancementperformance
  xuckless/anole#134 · Filter by author xuckless opened on Oct 28, 2026

• pg: uncached and one-off statements take two round trips

  performance
  xuckless/anole#132 · Filter by author xuckless opened on Oct 28, 2026

• Per-executor byte budgets and admission control for buffered bodies, WebSocket messages and waiting work

  enhancementlimitation
  xuckless/anole#131 · Filter by author xuckless opened on Oct 28, 2026

• WebSocket: refuse new upgrades with 503 + Retry-After when the server is overloaded

  enhancementperformance
  xuckless/anole#129 · Filter by author xuckless opened on Oct 28, 2026

• console: /db call rates and latencies, the /routes cache flag, and /db for Redis, MongoDB, NATS and Kafka

  xuckless/anole#128 · Filter by author xuckless opened on Oct 28, 2026
  1

• kafka: consumer spans per record and Guard (breaker/retry) wiring

  xuckless/anole#112 · Filter by author xuckless opened on Oct 23, 2026

• kafka: producer throughput below the design (1 in-flight request per connection, one producer-wide mutex)

  xuckless/anole#111 · Filter by author xuckless opened on Oct 23, 2026

• grpc-dotnet over HTTP/3: cancel_after_begin reports Internal instead of Cancelled (also against Kestrel)

  xuckless/anole#110 · Filter by author xuckless opened on Oct 23, 2026
  1

• net: UDP batches use plain recvmmsg/sendmmsg on io_uring

  xuckless/anole#106 · Filter by author xuckless opened on Oct 23, 2026
  1

• HttpArena: static files over HTTP/2 and production-stack below the field

  xuckless/anole#102 · Filter by author xuckless opened on Oct 23, 2026
  3

• HttpArena: HTTP/3 baseline 64k req/s and static 27k, ~4 cores busy (Bun 3.4M)

  xuckless/anole#100 · Filter by author xuckless opened on Oct 23, 2026
  4

• HTTP/2: idle connections keep their reader and writer tasks (SSE at scale)

  xuckless/anole#97 · Filter by author xuckless opened on Oct 23, 2026
  2

• Console /config shows http = (unset) for apps that call listen()

  xuckless/anole#96 · Filter by author xuckless opened on Oct 23, 2026

• WebSocket over HTTP/1.1: memory per user 0.26 -> 0.33 MB in the video-call relay after the relay pass

  xuckless/anole#93 · Filter by author xuckless opened on Oct 23, 2026

• Fan-out under overload: a handler's reply waits behind a full pass of 64-message send rounds

  xuckless/anole#92 · Filter by author xuckless opened on Oct 23, 2026
  1