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| -rw-r--r-- | release-notes/3.10.0.md | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/release-notes/3.10.0.md b/release-notes/3.10.0.md index 2754631f87..dba6213f21 100644 --- a/release-notes/3.10.0.md +++ b/release-notes/3.10.0.md @@ -158,6 +158,13 @@ Release notes are kept under [rabbitmq-server/release-notes](https://github.com/ #### Internal API and Other Changes + * Two rarely used classic queue metrics have been removed. Their removal reduces pressure + on internal table writes and boosts classic queue v1 throughput by 10 to 20 percent. + + Contributed by @felixhuettner. + + GitHub issue: [#4431](https://github.com/rabbitmq/rabbitmq-server/pull/4431) + * Tracing and `idle_since` timestamps now reflect local time in RFC 3339 format. Previously a custom format was used for these timestamps and they always reflected UTC time. @@ -246,6 +253,27 @@ This release includes all applicable [bug fixes that shipped in `3.9.x` releases GitHub issue: [#4408](https://github.com/rabbitmq/rabbitmq-server/pull/4408) +### MQTT Plugin + +#### Enhancements + + * Durable (QoS 1) subscriptions now can be backed by [quorum queues](https://www.rabbitmq.com/quorum-queues.html) if configured so. + + This setting **can only be applied for new clusters**: existing durable classic + queues will not be converted. Enabling this setting in a cluster with existing + durable subscription data of MQTT clients will make it impossible for them to + subscribe without **explicit queue deletion** by the cluster operator. + + To opt in to use quorum queues for durable MQTT subscriptions, use the `mqtt.durable_queue_type` + configuration key in `rabbitmq.conf`: + + ``` ini + mqtt.durable_queue_type = quorum + ``` + + GitHub issue: [#4401](https://github.com/rabbitmq/rabbitmq-server/pull/4401) + + ### OAuth 2 AuthN and AuthZ Backend Plugin #### Enhancements |