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Shorter 4.1.1 release notes

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Michael Klishin 2025-06-05 16:30:13 +04:00
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## RabbitMQ 4.1.1
RabbitMQ `4.1.1` is a maintenance release in the `4.1.x` [release series](https://www.rabbitmq.com/release-information).
Starting June 1st, 2024, community support for this series will only be provided to [regularly contributing users](https://github.com/rabbitmq/rabbitmq-server/blob/main/COMMUNITY_SUPPORT.md) and those
who hold a valid [commercial support license](https://tanzu.vmware.com/rabbitmq/oss).
It is **strongly recommended** that you read [4.1.0 release notes](https://github.com/rabbitmq/rabbitmq-server/releases/tag/v4.1.0)
in detail if upgrading from a version prior to `4.1.0`.
### Minimum Supported Erlang Version
This release requires Erlang 26 and supports Erlang versions up to `27.3.x`.
[RabbitMQ and Erlang/OTP Compatibility Matrix](https://www.rabbitmq.com/docs/which-erlang) has more details on
Erlang version requirements for RabbitMQ.
[RabbitMQ and Erlang/OTP Compatibility Matrix](https://www.rabbitmq.com/docs/which-erlang) has more details on Erlang version requirements for RabbitMQ.
Nodes **will fail to start** on older Erlang releases.
@ -37,14 +30,8 @@ Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://
* Empty classic queues init faster after a clean shutdown.
Contributed by @gomoripeti.
GitHub issue: [#13870](https://github.com/rabbitmq/rabbitmq-server/pull/13870)
* Private key password could appear in certain exceptions at (failed) node boot time.
GitHub issue: [#13999](https://github.com/rabbitmq/rabbitmq-server/pull/13999), [#14028](https://github.com/rabbitmq/rabbitmq-server/pull/14028)
#### Bug Fixes
@ -70,10 +57,22 @@ Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://
* RabbitMQ could fail to log certain client connection errors for TLS-enabled
listeners.
Contributed by @LoisSotoLopez.
GitHub issue: [#13985](https://github.com/rabbitmq/rabbitmq-server/pull/13985)
* Private key password could appear in certain exceptions at (failed) node boot time.
GitHub issue: [#13999](https://github.com/rabbitmq/rabbitmq-server/pull/13999), [#14028](https://github.com/rabbitmq/rabbitmq-server/pull/14028)
### MQTT Plugin
#### Bug Fixes
* When an MQTTv5 client that had a QoS 0 subscription is closed, the
transient queue that was backing it will now be deleted.
GitHub issue: [#14006](https://github.com/rabbitmq/rabbitmq-server/pull/14006)
### Stream Plugin
@ -98,8 +97,6 @@ Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://
is a new command that forces a group of quorum queues to take a checkpoint and
delete its on disk segment files, where possible.
Contributed by @aaron-seo.
GitHub issue: [#13938](https://github.com/rabbitmq/rabbitmq-server/pull/13938)
@ -110,43 +107,31 @@ Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://
* A separate chain for authentication and authorization backends now can be used
used exclusively for the HTTP API and the management UI.
Contributed by @aaron-seo.
GitHub issue: [#13819](https://github.com/rabbitmq/rabbitmq-server/pull/13819)
* Reduced memory footprint of the plugin for certain workloads.
Contributed by @the-mikedavis.
GitHub issue: [#13900](https://github.com/rabbitmq/rabbitmq-server/pull/13900)
* When UI session expires, the user is redirected to the login page.
Contributed by @the-mikedavis.
GitHub issue: [#13975](https://github.com/rabbitmq/rabbitmq-server/pull/13975)
* `GET /api/health/checks/ready-to-serve-clients` is a new health check
that responds a 200 OK if the target node has fewer connections to the AMQP
and AMQPS ports than the configured maximum.
Contributed by @the-mikedavis.
GitHub issue: [#13782](https://github.com/rabbitmq/rabbitmq-server/issues/13782)
* `GET /api/health/checks/ready-to-serve-clients` is a new health check
that responds a 200 OK if the target node is ready to serve clients
(booted, not above the connection limit, not in [maintenance mode](https://www.rabbitmq.com/docs/upgrade#maintenance-mode)).
Contributed by @the-mikedavis.
GitHub issue: [#13782](https://github.com/rabbitmq/rabbitmq-server/issues/13782)
* Protocol listener health check now supports comma-separated lists of
protocol names.
Contributed by @the-mikedavis.
GitHub issue: [#13874](https://github.com/rabbitmq/rabbitmq-server/pull/13874)
* New page for declaring super streams (partitioned streams).
@ -173,7 +158,6 @@ Release notes can be found on GitHub at [rabbitmq-server/release-notes](https://
GitHub issue: [#13801](https://github.com/rabbitmq/rabbitmq-server/pull/13801)
### Dependency Changes
* `ra` was updated to [`2.16.9`](https://github.com/rabbitmq/ra/releases)