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Blog post for 0.16.0 #198

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Blog post for 0.16.0
k-wall Oct 1, 2025
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Update 2025-10-01-release-0_16_0.md
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---
layout: post
title: "Kroxylicious release 0.16.0"
date: 2025-10-01 00:00:00 +1200
author: "Keith Wall"
author_url: "https://github.com/k-wall"
# noinspection YAMLSchemaValidation
categories: blog kroxylicious-proxy kroxylicious-operator releases
tags: [ "releases", "kroxylicious-proxy", "kroxylicious-operator" ]
---

The Kroxylicious project is very pleased to announce the release
of [Kroxylicious 0.16.0](https://github.com/kroxylicious/kroxylicious/releases/tag/v0.16.0). See
the [Changelog](https://github.com/kroxylicious/kroxylicious/blob/main/CHANGELOG.md#0160) for a list of changes and
summary of Deprecations, Changes and Removals.

The main highlights of this release are:

### Apache Kafka 4.1.0 compatibility

The main change in this release is Apache Kafka 4.1.0 compatibility. The proxy will now relay Kafka 4.1 specific versions of the Kafka RPC and your filters can intercept them.

### Observability improvements

Thanks to the work of [hrishabhg](https://github.com/hrishabhg), the proxy now sports connection count gauges, alllowing you to monitor downstream and upstream connection counts in realtime.

### Feedback

Please let us know,
through [Slack](https://kroxylicious.slack.com), [GitHub](https://github.com/kroxylicious/kroxylicious/issues) or
even [bsky](https://bsky.app/profile/kroxylicious.io)), if you find the project interesting or helpful and especially if
you have deployed it in production.