- Added leafnode connection stats to connz and expanded accstatsz to include leafnode, route, and gateway metrics, improving monitoring capabilities.
- Implemented multiple JetStream reliability fixes including faster leafnode resync, corrected AllowMsgTTL updates, deadlock and race condition resolutions, and proper handling of consumer pull NoWait requests.
- Enhanced Raft stability with monotonic heartbeat timing, partition desync prevention, and refined health‑check behavior, alongside corrected memory usage reporting and delivery policy handling.
Release v2.11.5
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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;