- Added new server options (no fast producer stall, first info timeout) and expanded monitoring endpoints (gatewayz, raftz, ipqueuesz, routez) with extra subscription and pending bytes data.
- Implemented extensive performance optimizations for JetStream (consumer signaling, num‑pending calculations, disk I/O limits, reduced allocations, faster filter handling) and improved clustering start‑up latency.
- Fixed numerous bugs including consumer message skips, data races, Raft proposal drops, stream desyncs, deadlocks, memory leaks, and WebSocket compressor cleanup issues.
Release v2.10.26
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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;