- Added monitoring endpoints, a raft query parameter for /jsz, and enhanced /leafz with server name and spoke flag.
- Lowered the default jetstream.max_outstanding_catchup to 64 MiB and introduced numerous performance and stability optimizations (intra‑process queue, IO handling, consumer creation, store calls, snapshot handling) for heavy‑load scenarios.
- Fixed multiple panics and state‑loss bugs across JetStream, KV, MQTT and JWT handling, and updated several dependencies.
Release v2.9.15
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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;