- Added performance optimizations across core queues, leafnode subscription propagation, WebSocket compression, Raft leadership, and JetStream snapshot handling, reducing memory footprint and latency.
- Introduced new features such as RTT sorting for /connz, operation type in panic messages, monotonic time for internal measurements, and enhanced health‑check and monitoring capabilities.
- Fixed numerous bugs including premature WebSocket closing, config reload race conditions, Raft debug logging format, usage report deadlocks, and stream Raft node shutdown issues.
Release v2.9.17
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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;