nats-io/nats-server v2.12.4-RC.2 on GitHub

Changelog

Refer to the 2.12 Upgrade Guide for backwards compatibility notes with 2.11.x.

Monitoring

Added tls_cert_not_after to the varz monitoring endpoint for showing when TLS certificates are due to expire (#7709)

JetStream

Fixed an issue where a single truncated block could prevent storing new messages in the filestore (#7704)
Fixed a concurrent map iteration/write panic that could occur on WorkQueue streams during partitioning (#7708)
Fixed a deadlock that could occur on shutdown when adding streams (#7710)
Required API level errors are now only returned after other checks, preventing unexpected replies from other servers (#7711)
A data race on mirror consumers has been fixed (#7716)
JetStream no longer leaks subscriptions in a cluster when a stream import/export is set up that overlaps the $JS.> namespace (#7720)
The filestore will no longer waste CPU time rebuilding subject state for WALs (#7721)
Configuring cluster_traffic in config mode has been fixed (#7723)
A subject interest check bug that could exit early due to a partial wildcard has been fixed (#7728)