- Changed on-disk storage format for significant performance gains; downgrades below 2.9.22 cannot read the new format.
- Added profiling configuration and extensive contention/lock reductions across Core, JetStream, leafnodes, and WebSocket, plus other performance tweaks.
- Fixed multiple bugs (panic, lock inversion, duplicate messages, PUBREL header, route issues) and updated documentation links and systemd shutdown handling.
Release v2.10.2
Official NATS changelog summary with source attribution, release tags, and community reactions.
Track this NATS release note alongside related changelog updates, risky changes, and weekly digest signals from the developer community.
Verify the original release note
Every summary should remain traceable to the original changelog or release source.
Follow this in context
Turn this NATS release note into a weekly digest for the tools you actually use.
Create digestMore NATS changelog updates
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;