- Fixed numerous bugs and race conditions across authentication, routing, monitoring, JetStream, Raft, and MQTT, preventing panics, memory leaks, and stream desynchronisation.
- Applied security hardening: refreshed JWT permissions on account updates, corrected external auth handling, fixed proxy/TLS sniffing, and addressed OCSP loop issues.
- Made functional tweaks: writer options now consistently applied with s2 fast compression, service import replies now work over cluster routes, and removed deprecated Monitoring JSONP callback support (potential breaking change).
Release v2.14.3
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Decoupled Raft transport and increased disk concurrency (now configurable) with several JetStream performance and memory optimizations;
Decoupled JetStream Raft transport and increased disk concurrency semaphore to 4096 (configurable via max_concurrent_io) to improve performance and memory handling;
Fixed numerous race conditions, panics, and data‑race issues across authentication, routing, monitoring, JetStream, and Raft, improving stability and security.