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NATS

DEVOPS
Velocity5.0

High-performance messaging system for distributed applications

nats.io ↗

NATS 2.15.3 and 2.14.10 go final with a reload check and lighter JetStream scans.

messagingjetstreamoperationsmulti-tenancyrelease cadence
◆Current state
NATS released 2.15.3 and 2.14.10 on November 11 after two release candidates each. Both bring optional client-certificate verification, account-hash subject mappings, configurable leafnode and gateway ping intervals, and JetStream filestore scans that skip non-matching messages. 2.15.3 also adds the -t --test_reload flag that says whether a config change needs a restart.
◆Where it's heading
NATS runs two supported lines in lockstep, with RCs every few days before each patch. The work is operator-focused: multi-tenant account mappings, health checks for leafnodes and less JetStream overhead under large backlogs. New operator tooling lands on 2.15 first.
◆Prediction
Expect quiet weeks of maintenance and then the next RC pair for 2.15.4 and 2.14.11, likely with more JetStream filestore tuning.

◆Recent moves

  1. 2d ago

    NATS 2.14.10: optional TLS verify, account-hash mappings backported

    2.14.10 gives users still on the older line the same TLS, mapping, ping-interval and JetStream changes as 2.15.3, without the reload check. It keeps the two lines close enough that upgrades stay low risk.

    View source ↗
  2. 2d ago

    NATS 2.15.3: config reload check, optional TLS verify, faster scans

    The final 2.15.3 ships what the two RCs tested: a reload check for operators, account-hash mappings for multi-tenant setups and JetStream scans that do less work. It is the current line's main operator release this month.

    View source ↗
  3. 7d ago

    NATS 2.14.10 RC2 backports JetStream redelivery and ack fixes

    The 2.14 candidate carries the same JetStream scan and redelivery improvements and AckAll and gateway fixes as 2.15.3-RC.2. A backport for users still on 2.14.

    View source ↗
  4. 7d ago

    NATS 2.15.3 RC2 adds a config reload check, faster redelivery

    Operators get a -t --test_reload flag that reports whether a config change can be reloaded or needs a restart, and large redelivery backlogs no longer slow acknowledgements. It rounds out the 2.15.3 cycle with practical operations work.

    View source ↗
  5. 11d ago

    NATS 2.14.10 RC1 backports account-hash subject mappings

    A release candidate that backports the 2.15 account-hash subject mapping functions to the 2.14 line; useful for operators who have not upgraded, but no new direction.

    View source ↗
  6. 11d ago

    NATS 2.15.3 RC1 adds account-hash subject mapping functions

    The 2.15.3 candidate adds account-hash subject mapping functions for imports, exports and leafnode permissions plus a new TLS verify option, the main feature work in an otherwise maintenance-heavy cycle.

    View source ↗