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| author | Michael Klishin <michael@clojurewerkz.org> | 2023-03-20 08:37:26 +0400 |
|---|---|---|
| committer | Michael Klishin <michael@clojurewerkz.org> | 2023-03-20 08:37:26 +0400 |
| commit | 03bfe0a4467b89d2b356e5ce4031785e908876cb (patch) | |
| tree | 8a5f91ff10c3dadb54ce9a616f36c7742e62d93b /release-notes | |
| parent | 298dc8f42b00613e3a42fbc38bf1613e946d7599 (diff) | |
| download | rabbitmq-server-git-03bfe0a4467b89d2b356e5ce4031785e908876cb.tar.gz | |
Make CQv2 the new default
CQv2 is significantly more efficient (x2-4 on some workloads),
has lower and more predictable memory footprint, and eliminates
the need to make classic queues lazy to achieve that predictability.
Per several discussions with the team.
Diffstat (limited to 'release-notes')
| -rw-r--r-- | release-notes/3.12.0.md | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/release-notes/3.12.0.md b/release-notes/3.12.0.md index 69eb6f2b08..418610d021 100644 --- a/release-notes/3.12.0.md +++ b/release-notes/3.12.0.md @@ -109,9 +109,17 @@ in the `3.11.x` release series. GitHub issue: [#7553](https://github.com/rabbitmq/rabbitmq-server/pull/7553#issuecomment-1463660454) - * Reduced memory footprint, improved memory use predictability and throughput of classic queues. + * Reduced memory footprint, improved memory use predictability and throughput of classic queues (version 2, or CQv2). This particularly benefits classic queues with longer backlogs. + Classic queue v2 (CQv2) storage implementation **is now the default**. It is possible to switch + the default back to CQv1 using `rabbitmq.conf`: + + ``` ini + # uses CQv1 by default + classic_queue.default_version = 1 + ``` + GitHub issues: [#4522](https://github.com/rabbitmq/rabbitmq-server/pull/4522), [#7516](https://github.com/rabbitmq/rabbitmq-server/pull/7516) * Reduced peak memory footprint of quorum queues. |