- Fixed multiple JetStream consumer and RAFT issues (deadlock, ghost consumers, inactive threshold handling, replica changes, memory leak) and added pending messages/bytes info to pull request errors.
- Added warnings for storage lag, improved recovery of messages exceeding max per subject after abnormal exits, and fixed Leafnode permission leaks, MQTT subject mapping, and implicit route reconnection bugs.
- Upgraded build to Go 1.19.2 for executables and Docker images and corrected configuration reload handling for the allow_non_tls option.
Release v2.9.4
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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;