NATS - v2.9.1

Changelog

Go Version

• 1.19.1: Both release executables and Docker images are built with this Go release.

Added

• JetStream:
  • Ability to remove a server by peer ID instead of server name (#3473)
  • Peer ID in the meta_cluster of statsz or jsz monitoring endpoint (#3476)
  • Ability to apply a discard new policy per subject. A new JSON field in the stream configuration called discard_new_per_subject can now be set (along with discard new policy and max messages per subject > 0) (#3487)

Improved

• JetStream:
  • Optimize acknowledgment handling. Thanks to @neilalexander for the report and contribution (#3468, #3472)

Updated

• Dependencies (#3491)

Changed

• JetStream:
  • When filtering a source stream, use the new consumer create API subject (#3478)

Fixed

• JetStream:
  • Peer randomization when creating consumers group for replicas of 1. Thanks to @goku321 for the contribution (#3470)
  • Added an error if consumer's Name and Durable are not equal when sending to the new $JS.API.CONSUMER.CREATE.%s.%s.%s subject (#3471)
  • Server was not sending a 409 to the client library when a pull request was closed after sending at least a message but could not send more if that would exceed the max_bytes pull request limit (#3474)
  • Possible panic on peer remove on server shutdown (#3477)
  • Filtered consumers may also receive messages on other subjects from the stream. Thanks to @perestoronin for the report (#3486)
• LeafNode:
  • A server that accepts a leaf connection on the websocket port, and the websocket{} block had a no_auth_user defined, this user was not being used for the account binding for that leaf node connection (#3489)
• Edge condition handling in {{Split()}} subject mapping function (#3463)

Complete Changes

https://github.com/nats-io/nats-server/compare/v2.9.0...v2.9.1