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new 4b6e9acc6e49 add 3.2.0 release announcement blog post (#788)
4b6e9acc6e49 is described below
commit 4b6e9acc6e49befdc709effa7f5ae8f9e129e53f
Author: Julien Jakubowski <[email protected]>
AuthorDate: Thu Feb 15 12:31:37 2024 +0100
add 3.2.0 release announcement blog post (#788)
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+---
+author: Julien Jakubowski
+title: "What's New in Apache Pulsar 3.2.0"
+date: 2024-02-12
+---
+
+The Apache Pulsar community is thrilled to announce the launch of Apache
Pulsar 3.2, a new feature release! This achievement is the result of a
significant community collaboration, involving 57 contributors who made over 88
commits to add new features and fix bugs. Our heartfelt thanks go out to every
contributor for their invaluable work!
+
+<!--truncate-->
+
+## What's new in Apache Pulsar 3.2?
+
+This release introduces [180+ improvements, optimizations, and
fixes](https://pulsar.apache.org/release-notes/versioned/pulsar-3.2.0/) on the
broker, Pulsar IO/Pulsar Functions, CLI, and others.
+
+It also unveils key new features, highlighted below.
+
+### Rate limiting
+
+An increasing number of messaging-as-a-service platform teams are adopting
Apache Pulsar as their main building block for providing messaging services
across their organizations. This is clear validation that the value of Apache
Pulsar’s truly multi-tenant architecture is delivering results, making Apache
Pulsar a cost-efficient and reliable solution for messaging-as-a-service
platform teams in very demanding application environments.
+
+In the Apache Pulsar project, we are committed to delivering further
improvements to the existing multi-tenancy features. One area of improvement is
the service level management and capacity management of a large Pulsar system.
This is also a key concern of messaging-as-a-service platform teams.
+
+Apache Pulsar 3.2.0 features the implementation of [PIP-322 Pulsar Rate
Limiting
Refactoring](https://github.com/apache/pulsar/blob/master/pip/pip-322.md). Rate
limiters act as a conduit to more extensive capacity management and Quality of
Service (QoS) controls in Pulsar. They are integral to Pulsar's core
multi-tenancy features. This refactoring paves the way for future enhancements
in this area.
+
+### Null-key messages deletion during compaction
+
+Apache Pulsar supports [Topic
Compaction](https://pulsar.apache.org/docs/3.2.x/concepts-topic-compaction/).
+
+In versions 3.1.0 and earlier of Pulsar, topic compaction retains messages
that have null keys.
+
+Starting with Pulsar 3.2.0, the default behavior has been changed to delete
messages with null keys during topic compaction, which helps in reducing
storage costs. However, if necessary, you can revert to the previous behavior
by setting `topicCompactionRetainNullKey=true` in `broker.conf`.
+
+For more details, refer to the description in
[PIP-318](https://github.com/apache/pulsar/blob/master/pip/pip-318.md).
+
+### WebSockets new features
+
+The Pulsar WebSocket API now supports:
+- Consuming multiple topics as described in
[PIP-307](https://github.com/apache/pulsar/blob/master/pip/pip_307.md).
+- End-to-end encryption, as described in
[PIP-290](https://github.com/apache/pulsar/blob/master/pip/pip-290.md).
+
+### Enhanced security for Pulsar Functions & Pulsar IO
+
+Pulsar 3.2.0 provides increased security for Pulsar Functions & Pulsar IO by
allowing users to configure Pulsar Connectors with non-plaintext secrets. More
details in
[PIP-289](https://github.com/apache/pulsar/blob/master/pip/pip-289.md) & the
following pull requests:
+- [Make connectors load sensitive fields from
secrets](https://github.com/apache/pulsar/pull/21675)
+- [Support configuration secret
interpolation](https://github.com/apache/pulsar/pull/20901)
+
+### CLI user experience improvements
+
+This release introduces several handy features to the CLI, including:
+- [Add command line option for configuring the memory
limit](https://github.com/apache/pulsar/pull/20663)
+- [Allow for deleting topics in bulk, using a regex or a
file](https://github.com/apache/pulsar/pull/21664)
+- [Display the current cluster in `pulsar-admin clusters
list`](https://github.com/apache/pulsar/pull/20614)
+
+### Build improvement
+
+Pulsar 3.2.0 also introduces enhancements to the build process and
reliability, including a Bill of Materials (BOM) to simplify dependency
management, as outlined in
[PIP-326](https://github.com/apache/pulsar/blob/master/pip/pip-326.md).
+
+### More
+
+Feel free to explore the [full release
notes](https://github.com/apache/pulsar/releases/tag/v3.2.0) for a detailed
list of all improvements and fixes.
+
+## Compatibility between releases
+
+When upgrading an existing Pulsar installation, it's crucial to perform
component upgrades in a sequential manner.
+
+Starting from version 3.0, users have the option to perform live upgrades or
downgrades between two consecutive LTS versions or two consecutive feature
versions (which also include LTS versions).
+
+For the 3.2 series, you should be able to upgrade from version 3.1 or
downgrade from the subsequently released version 3.3. If you are currently
using an earlier version, please ensure that you upgrade to version 3.1 before
proceeding further.
+
+## Getting started
+
+Pulsar 3.2.0 is now available for
[download](https://pulsar.apache.org/download/). To get started with Pulsar,
you can run a Pulsar cluster [on your local machine, Docker, or
Kubernetes](https://pulsar.apache.org/docs/3.2.x/getting-started-home/).
+
+## Getting involved
+
+Apache Pulsar is one of the fastest-growing open-source projects, recognized
by the [Apache Software
Foundation](https://thestack.technology/top-apache-projects-in-2021-from-superset-to-nuttx/)
as a Top 5 Project based on engagement. The vitality of Pulsar relies on
continued community growth, which would not be possible without each and every
contributor to the project. The Pulsar community welcomes contributions from
anyone with a passion for open source, messaging, and streaming, as w [...]
+
+- Pulsar Summit North America 2023 took place on Wednesday, October 25, 2023!
[Watch the sessions
recordings](https://pulsar-summit.org/event/north-america-2023/schedule).
Follow [@PulsarSummit](https://twitter.com/pulsarsummit) on Twitter/X for
updates and details on the upcoming Pulsar Summit events.
+- Read the [Apache Pulsar Contribution
Guide](https://pulsar.apache.org/contribute/) to start your first contribution.
+- Visit the [Pulsar GitHub repository](https://github.com/apache/pulsar),
follow [@apache_pulsar](https://twitter.com/apache_pulsar) on Twitter/X , and
join the [Pulsar community on Slack](https://apache-pulsar.slack.com/).
