Enhancements

• Add limiter update API #9133.

• Avoid creating temporary zip files when syncing data directory during cluster startup #9429.

• Refactor: move /mqtt/sys_topics to generic /configs/sys_topics #9511.

• Refactor: use POST not PUT for /users/{name}/change_pwd #9533.

• Add compression functions zip, gzip, zip_compress in Rule-Engine and corresponding decompression functions #9573.

• Return 204 instead of 200 for PUT /authenticator/:id #9434.

• Added the option to customize the clientid prefix of egress MQTT bridges. #9609

• Ensure the default expiration time of banned is large enough #9599.

Bug fixes

• Trigger message.dropped hook when QoS2 message is resend by client with a same packet id, or 'awaiting_rel' queue is full #9487.

• Fix shared subscription 'sticky' strategy #9578. Prior to this change, a 'sticky' subscriber may continue to receive messages after unsubscribing.

• Add check to ensure that a given key is among the prepared statements on query in the mysql connector #9571.

• Fix password leak to logs for connectors #9608.