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kroxylicious.io

@kroxylicious.io

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Kroxylicious, the snappy open source proxy for Apache Kafka®

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kroxylicious.io @kroxylicious.io · 29/09/2026

Ever wondered what our community is working on? Now @oss-ip.bsky.social tracks our design proposals and announces them to the world!

kroxylicious.io @kroxylicious.io · 04/09/2026

Kroxylicious 0.24.0 lives! 0.24.0 delivers **SASL Termination** where the proxy takes charge of authenticating the client rather than the brokers, and a significant evolution of the Filter/Router APIs as we prepare the ground ready for Kroxylicious 1.0. kroxylicious.io/blog/kroxyli...

kroxylicious.io

Kroxylicious release 0.24.0

Kroxylicious 0.24.0: SASL Termination & API Evolution for 1.0

kroxylicious.io @kroxylicious.io · 17/07/2026

kroxylicious.io/blog/kroxyli... Kroxylicious 0.23.0 hatched🐊. PEM keys for KMS, CipherTrust KMS improvement, cross-namespace Strimzi references, Router API implementation continues

kroxylicious.io

Kroxylicious release 0.23.0

Kroxylicious 0.23.0 has snapped🐊 into existence!

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kroxylicious.io @kroxylicious.io · 03/07/2026

Kroxylicious 0.22.0 is here! New Record Encryption implementation for Thales CipherTrust Manager. Improved operator resilience. Foundations laid for Routing and Hot Reload. kroxylicious.io/blog/kroxyli...

kroxylicious.io

Kroxylicious release 0.22.0

Kroxylicious 0.22.0 has been released! This release brings a new Record Encryption KMS implementation for Thales CipherTrust Manager, bumps the minimum Java version to 21, and improves operator resili...

kroxylicious.io @kroxylicious.io · 18/06/2026

We've just taken a big step for the Kroxylicious project! Proposal 70 has merged — the result of a lot of hard work shaping the Routing API. There's plenty of code to follow before it's a usable thing, but this lays the foundation. github.com/kroxylicious... #ApacheKafka

kroxylicious.io @kroxylicious.io · 04/06/2026

We promised more details on those Kroxylicious numbers kroxylicious.io/benchmarking... Shortest possible summary: we built a second cluster because the first one was lying to us. The full story catching that lie, and how complicated reliable numbers really are: kroxylicious.io/benchmarking...

kroxylicious.io

Does my proxy look big in this cluster?

Every good benchmarking story starts with a hunch. Mine was that Kroxylicious is cheap to run — I’d stake my career on it, in fact — but it turns out that “trust me, I wrote it” is not a widely accept...

kroxylicious.io @kroxylicious.io · 28/05/2026

Just how fast does a crocodile swim? New post: measuring the overhead Kroxylicious adds to Apache Kafka. Passthrough: below measurement noise. Record encryption: ~25% throughput hit, but Kafka never sees the plaintext. Open source benchmark harness — run it yourself. kroxylicious.io/benchmarking...

kroxylicious.io

Does my proxy look big in this cluster?

Every good benchmarking story starts with a hunch. Mine was that Kroxylicious is cheap to run — I’d stake my career on it, in fact — but it turns out that “trust me, I wrote it” is not a widely accept...

kroxylicious.io @kroxylicious.io · 21/05/2026

Big news: kroxylicious.io/blog/kroxyli... While we've had ideas around routing, one virtual cluster fronting multiple target clusters, for a while we have recently turned them into something tangible! Check out the blog & tell us how that fits your use cases, what things it allows you!

kroxylicious.io

A proof of concept for Routing

tl;dr: We’ve built a proof-of-concept (POC) routing capability that allows Kafka clients to produce and consume records to topics in multiple clusters. In other words, clients don’t need to know where...

Reposted by @kroxylicious.io

Tom Cooper @tomcooper.dev · 19/05/2026

This #Current26 talk uses very Confluent specific tooling (unsurprisingly) but if you want encryption at rest you can use the OSS @kroxylicious.io Kafka proxy kroxylicious.io/use-cases/#e... Kroxy has a pluggable architecture so record masking and other privacy features can be added in easily

kroxylicious.io

Network proxy framework for Apache Kafka

kroxylicious.io @kroxylicious.io · 18/05/2026

Kroxylicious 0.21.0 has been released. Check out the video and blog! youtu.be/BuDJfMufm60?... kroxylicious.io/blog/kroxyli...

YouTube video by Kroxylicious

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kroxylicious.io @kroxylicious.io · 09/04/2026

Kroxylicious Record Encryption: Shifting the Trust Boundary www.youtube.com/watch?v=A8bz...

Kroxylicious Record Encryption: Shifting the Trust Boundary

YouTube video by Kroxylicious

kroxylicious.io @kroxylicious.io · 01/04/2026

The Kroxylicious team is pleased to announce the 0.20.0 release (kroxylicious.io/blog/kroxyli...). Significant new features include a new Connection Expiration filter, Entity Isolation filter, and OpenShift Route integration.

kroxylicious.io

Kroxylicious release 0.20.0

We’re excited to announce the release of Kroxylicious 0.20.0! There’s been a lot of action, check out the full Changelog for everything including deprecations, changes, and removals.

kroxylicious.io @kroxylicious.io · 24/03/2026

Agenda: docs.google.com/document/d/1...

docs.google.com

Agenda/Minutes - Kroxylicious Community Calls

Agenda/Minutes - Kroxylicious Community Calls Information: Home: https://kroxylicious.io/ Slack: https://kroxylicious.slack.com/ Weekly Call Coordinates: Every 2 Weeks alternate 08:00 AM - 8:45 AM...

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kroxylicious.io @kroxylicious.io · 24/03/2026

If there is anything else you would like to see on the agenda please do reply here or leave a comment on the agenda doc. So if you have any questions or comments for the Kroxylicious team. Come along and say hi! (we will have a more North American friendly call in 2 weeks)

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kroxylicious.io @kroxylicious.io · 24/03/2026

Adopting an AI contribution policy. More practical applications: github.com/kroxylicious... github.com/kroxylicious... What does a good PR look like?, How do we get the models to generate what we want to work with but not paint our selves into a corner as AI usage evolves.

docs: add AGENTS.md with proxy-specific AI agent guidelines by SamBarker · Pull Request #3431 · kroxylicious/kroxylicious

Description Adds a repository-level AGENTS.md providing AI coding tools with proxy-specific technical context, supplementing the org-level guidelines being introduced in kroxylicious/.github#27. Co...

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kroxylicious.io @kroxylicious.io · 24/03/2026

When and how to use our proposal process? The core team expect to follow the same process as everyone else and so this is to figure out how do we make it easy and light weight for everyone

docs: add AGENTS.md with proxy-specific AI agent guidelines by SamBarker · Pull Request #3431 · kroxylicious/kroxylicious

Description Adds a repository-level AGENTS.md providing AI coding tools with proxy-specific technical context, supplementing the org-level guidelines being introduced in kroxylicious/.github#27. Co...

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kroxylicious.io @kroxylicious.io · 24/03/2026

Sam just added a couple of items to the community call agenda for this week.

docs: add AGENTS.md with proxy-specific AI agent guidelines by SamBarker · Pull Request #3431 · kroxylicious/kroxylicious

Description Adds a repository-level AGENTS.md providing AI coding tools with proxy-specific technical context, supplementing the org-level guidelines being introduced in kroxylicious/.github#27. Co...

kroxylicious.io @kroxylicious.io · 09/03/2026

Kroxylicious is the snappy open source proxy for Apache Kafka®. See how it works in 3 minutes: youtu.be/xLOjKScpJ3Q #ApacheKafka #Kroxylicious #EventStreaming #DataEngineering

Kroxylicious Introduction

YouTube video by Kroxylicious

Reposted by @kroxylicious.io

kroxylicious.io @kroxylicious.io · 04/03/2026

Kroxylicious is a growing project so we are looking to scale things up, check out our latest blog post for the full details kroxylicious.io/2026/03/04/e...

kroxylicious.io

Scaling for the Future: Evolving Kroxylicious Governance

Hot on the heels of the release of Kroxylicious 0.19.0 we have some other news to share. We are excited to announce a shift in how we manage the project, partly based on the proven model used by the A...

kroxylicious.io @kroxylicious.io · 04/03/2026

Kroxylicious is a growing project so we are looking to scale things up, check out our latest blog post for the full details kroxylicious.io/2026/03/04/e...

kroxylicious.io

Scaling for the Future: Evolving Kroxylicious Governance

Hot on the heels of the release of Kroxylicious 0.19.0 we have some other news to share. We are excited to announce a shift in how we manage the project, partly based on the proven model used by the A...

kroxylicious.io @kroxylicious.io · 04/03/2026

As always the Kroxylicious team are very pleased to announce the release the 0.19.0 release (kroxylicious.io/blog/kroxyli...). Kroxylicious will now bite down on Kafka 4.2 RPC calls, snack on idle connections and other quality of life improvements.

kroxylicious.io

Kroxylicious release 0.19.0

We’re excited to announce the release of Kroxylicious 0.19.0! There’s a lot to dig into — check out the full Changelog for everything including deprecations, changes, and removals.

kroxylicious.io @kroxylicious.io · 18/02/2026

New Release: kroxylicious.io/releases/jun.... We’ve refreshed our dependencies, including an essential upgrade to Apache Kafka 4.2.0. We’ve also smoothed out the setup process, ensuring the new Kafka Queues feature works seamlessly straight out of the box. #ApacheKafka #UnitTesting

kroxylicious.io

kroxylicious-junit5-extension release 0.15.0

The Kroxylicious project is very pleased to announce the 0.15.0 release of our Junit5 Extension.

Reposted by @kroxylicious.io

kroxylicious.io @kroxylicious.io · 03/12/2025

The Kroxylicious projects is excited to announce v0.18.0. This release focused on supporting authentication both from the broker and in proxy! Release announcement: kroxylicious.io/blog/kroxyli... GitHub: github.com/kroxylicious... Maven Central: central.sonatype.com/search?q=g:i...

kroxylicious.io

Kroxylicious release 0.18.0

The Kroxylicious project is very pleased to announce the release of Kroxylicious 0.18.0. See the Changelog for a list of changes and summary of Deprecations, Changes and Removals.

kroxylicious.io @kroxylicious.io · 03/12/2025

The Kroxylicious projects is excited to announce v0.18.0. This release focused on supporting authentication both from the broker and in proxy! Release announcement: kroxylicious.io/blog/kroxyli... GitHub: github.com/kroxylicious... Maven Central: central.sonatype.com/search?q=g:i...

kroxylicious.io

Kroxylicious release 0.18.0

The Kroxylicious project is very pleased to announce the release of Kroxylicious 0.18.0. See the Changelog for a list of changes and summary of Deprecations, Changes and Removals.

kroxylicious.io @kroxylicious.io · 07/11/2025

Kroxylicious is pleased to announce that 0.17.1[1] is now generally available! This is a patch release to allow older librdkafka clients to enable compression. We are working on many more interesting features in v0.18.0 [1] kroxylicious.io/blog/kroxyli...

kroxylicious.io

Kroxylicious release 0.17.1

The Kroxylicious project is very pleased to announce the release of Kroxylicious 0.17.1. See the Changelog for a list of changes and summary of Deprecations, Changes and Removals.

kroxylicious.io @kroxylicious.io · 28/10/2025

We are discussing a proposal to release Kroxylicious 1.0.0. The aims are: - Move to 1.0.0 to signal production-readiness - Stronger API/config stability guarantees until 2.0.0 - Policy for patch releases We'd welcome feedback on the proposal bit.ly/4od83s9

kroxylicious.io @kroxylicious.io · 28/10/2025

We are happy to announce the release of Kroxylicious v0.17.0 bit.ly/4oGt3HG. The main improvements in this release: the project is now based on Netty 4.2 and the project now publishes a Maven archetype, making it easy to start writing your own filter implementation.

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kroxylicious.io @kroxylicious.io · 01/10/2025

Ohh that’s news to us. Any recommendations for an alternative?

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kroxylicious.io @kroxylicious.io · 01/10/2025

The Kroxylicious project is very pleased to announce the release of v0.16.0 bit.ly/3IpOflV. Main changes bit.ly/4o3Eby5 are Kafka 4.1 compatibility and observabilty improvements. Happy proxying🐊.

kroxylicious.io @kroxylicious.io · 18/08/2025

Kroxylicious 0.15.0 released This is a fast-tracked release to address a key resilience issue: - Improved Bootstrap Resilience: The proxy now defaults to round-robin between brokers in bootstrapServers. - New record encryption 🔒quickstart Check out the full details kroxylicious.io/blog/kroxyli...

kroxylicious.io

Kroxylicious release 0.15.0

The Kroxylicious project is very pleased to announce the release of Kroxylicious 0.15.0. See the Changelog for a list of changes and summary of Deprecations, Changes and Removals.

kroxylicious.io @kroxylicious.io · 08/08/2025

📣 Kroxylicious 0.14.0 - new AuthN APIs (more to come here) - new metrics for tracking network stalls - Fixing support for encrypting messages over 1mb (we don't judge the messages we proxy...) - Better support for negotiating protocol versions kroxylicious.io/blog/kroxyli...

kroxylicious.io

Kroxylicious release 0.14.0

The Kroxylicious project is very pleased to announce the release of Kroxylicious 0.14.0. See the Changelog for a list of changes and summary of Deprecations, Changes and Removals.

kroxylicious.io @kroxylicious.io · 23/06/2025

The Kroxylicious project is very pleased to announce the release of Kroxylicious 0.13.0. bit.ly/4efdZws The big news - the first release of the Kroxylicious with an Operator. If you are deploying Kroxylicious to Kubernetes we hope this will simplify your life. Check it out. Feedback welcome.

kroxylicious.io @kroxylicious.io · 22/06/2025

It’s great to see someone organically recognise the value of Record Encryption. mostafahussein.medium.com/kafka-encryp...

mostafahussein.medium.com

Kafka Encryption for Cardholder Data: Solving PCI Challenges with Kroxylicious

Encrypt Kafka messages at rest without changing app code — using Kroxylicious and OpenBao to meet PCI encryption requirements.

kroxylicious.io @kroxylicious.io · 14/06/2025

Gunnar’s not wrong…

kroxylicious.io @kroxylicious.io · 12/05/2025

Whats that? You want a version of Kroxylicious thats supports Kafka 4? We got ya! kroxylicious.io/blog/kroxyli... #apacheKafka

kroxylicious.io

Kroxylicious release 0.12.0

The Kroxylicious project is very pleased to announce the release of Kroxylicious 0.12.0. See the Changelog for a list of changes and summary of Deprecations, Changes and Removals.

kroxylicious.io @kroxylicious.io · 09/05/2025

The Kroxylicious project is very pleased to announce the release of Kroxylicious 0.12.0. bit.ly/4k6HnGZ The main changes - Apache Kafka 4.0.0 compatibility and a changes to the defaults affecting downstream mTLS connections.

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kroxylicious.io @kroxylicious.io · 22/04/2025

Yay! We are now part of the @commonhaus.org family! kroxylicious.io/commonhaus/2...

kroxylicious.io

Kroxylicious joins the Commonhaus foundation

The Kroxylicious team are pleased to announce the project is now part of the Commonhaus foundation. We believe this is an important step in providing a stable basis for you, our community, to build ar...

kroxylicious.io @kroxylicious.io · 01/04/2025

New Release: kroxylicious.io/releases/jun... our JUnit extension nows supports Kafka 4.0.0 (along with older versions and Zookeeper). #ApacheKafka #UnitTesting

kroxylicious.io

kroxylicious-junit5-extension release 0.11.0

The Kroxylicious project is very pleased to announce the 0.11.0 release of our Junit5 Extension. This release introduces support for Apache Kafka 4.0. Support for earlier versions of Kafka is maintain...

kroxylicious.io @kroxylicious.io · 20/03/2025

The Kroxylicious project is very pleased to announce the release of Kroxylicious 0.11.0. bit.ly/4iCP0nZ The main change - a revamped configuration file. This will have you up and running in a.... snap🐊! We've also added new policy controls to Record Encryption.

kroxylicious.io

Kroxylicious release 0.11.0

The Kroxylicious project is very pleased to announce the release of Kroxylicious 0.11.0. See the Changelog for a list of changes and summary of Deprecations, Changes and Removals.

kroxylicious.io @kroxylicious.io · 28/02/2025

We’ve been spotted swimming in the wild. callistaenterprise.se/blogg/teknik... Really pleased to see people noticing the effort we are putting into simplifying developing and deployment as we go along!

callistaenterprise.se

Kroxylicious, Kafka Record Encryption and the Power of Proxies | Callista

Callista Enterprise - seniora IT-arkitekter och systemutvecklare inom Java, öppen källkod, agil utveckling och systemintegration

kroxylicious.io @kroxylicious.io · 02/02/2025

The Kroxylicious project is as pleased as always to announce v0.10.0 kroxylicious.io/blog/kroxyli.... This release tightens our security posture by allowing more control over the TLS protocol & ciphers used when accepting and making connections. We also add support for Fortanix DSM as a Key manager

kroxylicious.io

Kroxylicious release 0.10.0

The Kroxylicious project is very pleased to announce the release of Kroxylicious 0.10.0. See the Changelog for a list of changes and summary of Deprecations, Changes and Removals.

kroxylicious.io @kroxylicious.io · 17/12/2024

Just in time for the holidays Kroxylicious 0.9.0 is available from all reputable sources of Jars. Now with added #ApacheKafka 3.9 support! Full details at: kroxylicious.io/blog/kroxyli... We look forward to hearing your feedback.

kroxylicious.io

Kroxylicious release 0.9.0

The Kroxylicious project is very pleased to announce the release of Kroxylicious 0.9.0. This release introduces support for Apache Kafka 3.9.

kroxylicious.io @kroxylicious.io · 14/11/2024

We’d like to join the fun too! Proxying Kafka definitely counts as data streaming right 🐊

kroxylicious.io @kroxylicious.io · 07/11/2024

You rang?!

kroxylicious.io @kroxylicious.io · 07/11/2024

We don't have rate-limiting out of the box, though we'd happily support someone contributing a filter. We work quite hard not to mess with protocol semantics to be as transparent to clients as possible so we have no effect on ordering. Not sure what you mean by overflow...