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@M-Chris M-Chris released this 28 Sep 16:22
· 12 commits to main since this release
v1.1.10
2209dc2

@morojs/engine 1.1.0

Performance release: pipelined response corking and a zero-allocation hot path — no API changes, no behavior changes.

Numbers

Verified against the published npm packages, not just local builds. Measured comparisons against other servers and frameworks live in the MoroJS Benchmark repo.

What changed

  • Pipelined response corking — synchronous responses to pipelined requests now accumulate in a per-connection cork buffer and hit the socket as one write per batch instead of one queued write + event-loop deferral per response. Handlers still run strictly one-at-a-time on a clean stack (request N+1 is surfaced only after handler N returns); async handlers, upgrades, errors, and Connection: close keep their existing paths. The buffer is bounded by the write high-water mark.
  • Zero-allocation hot path on warm connections
    • Header parsing reuses header slots (and their string capacities) across requests instead of reallocating and destroying them each request.
    • The request snapshot (path, query, method, headers, body) is swapped with the parser rather than copied — the previous request's buffers become the parser's scratch for the next one.
    • Responses build into a reusable per-connection buffer and are written straight from it on the fast path — no per-response allocation, no intermediate copy. Oversized buffers (>64 KB) are released so a single large response can't pin memory.
    • Prebuilt status lines for hot statuses; the Connection: header no longer allocates.
  • Bounded as before — all caps (maxHeaders, body/head sizes, write high-water mark, pending-bytes flood cap) apply unchanged; large bodies and responses do not stay pinned to idle keep-alive connections.

Compatibility

  • No API changes. Drop-in for 1.0.0; MoroJS picks it up via ^1.0.0.
  • Same platform/ABI matrix as 1.0.0 (macOS arm64/x64, Linux glibc x64/arm64, Linux musl x64, Windows x64 × Node 20–26), prebuilt with npm provenance.

Verification

  • 128 socket-level wire tests (HTTP conformance + edge + hardening + regression, WebSocket, limits, TLS + TLS-hardening, permessage-deflate) — all passing.
  • 95-check parser unit suite + WebSocket/deflate unit suites under the C++ harness.
  • 234 MoroJS integration tests against this build.
  • libFuzzer corpus runs on the modified parser; ASan/UBSan legs run in CI.
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