blog · release

bunqueue v2.6.63

Ships 2 performance improvements. WorkerRateLimiter: O(n) → O(1) amortized: Replaced Array.filter() with head-pointer eviction for sliding window token expiration.

To install bunqueue v2.6.63

bun add bunqueue@2.6.63

npm install bunqueue@2.6.63

To upgrade bunqueue

bun add bunqueue@latest

Performance

• WorkerRateLimiter: O(n) → O(1) amortized: Replaced Array.filter() with head-pointer eviction for sliding window token expiration. Eliminates per-poll array allocation and removes Math.min(...spread) (potential stack overflow on large token arrays). Benchmarked: 10k tokens went from 31µs to ~0µs per call; zero memory allocation per poll cycle.
• FlowProducer: parallel sibling creation in TCP mode: add(), addBulk(), addBulkThen(), and addTree() now create independent children/jobs concurrently via Promise.all. TCP benchmark shows 3–6x speedup for flows with 10–20 children (network round-trips overlap instead of serializing). addBulkThen() uses Promise.allSettled for proper cleanup on partial failure. No impact in embedded mode (pushes are synchronous). addChain() unchanged (sequential by design).

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