- Reduced GC pressure and memory usage by eliminating time.After patterns, optimizing filestore scans, and improving state allocation estimation.
- Added concurrency safeguards: moved filestore cleanup/deletion to background goroutine, throttled writeFullState, and fixed data races and potential deadlocks in JetStream, MQTT, and WebSocket subsystems.
- Fixed several panics and bugs, including JWT permissions template handling, leafnode URL concatenation, stream scaling limit checks, and DiscardNew byte‑count calculation.
Release v2.10.5
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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;