- Added configurable timeout for the NATS resolver and switched JetStreamVarz fields to pointers, which may affect embedded server usage
- Fixed a wide range of stability issues including panics on 32‑bit systems, consumer crashes, mirror/source stream handling, memory leaks, websocket/MQTT subscription leaks, and deadlocks
- Improved error handling (e.g., returning 404 on failed message fetch) and reduced memory pressure/idle heartbeats
Release v2.2.1
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Added Leafnodes support with a configurable dial timeout option for high‑latency links
Upgrade to Go 1.25.12 and bump critical dependencies (klauspost/compress v1.19.2, golang.org/x/crypto v0.55.0).
Decoupled Raft transport and increased disk concurrency (now configurable) with several JetStream performance and memory optimizations;