Dekaf

Dekaf is a feature-rich open-source UI for Apache Pulsar, licensed under Apache 2.0.

• ⭐ If you like this work, please push the star button on GitHub
• 📚 Checkout useful Pulsar resources at the awesome Apache Pulsar list.
• 🤝 Hire me: kiryl.valkovich@proton.me
• 👋 Share your feedback here: #329

• CrowdStrike - Cybersecurity technology company based in Austin, Texas.
• Splio - SaaS CRM Marketing platform.
• StreamX - Digital Experience Mesh for AEM.

Please submit a PR to add your company to this list.

• 📚 Quick-start
• 📚 Helm chart
• 📚 Consumer session tutorial
• 📚 Configuration reference

• Browse Pulsar resources like tenants, namespaces, topics, subscriptions, consumers and producers.
• View stats for each resource.
• Create topics, edit namespace and topic policies, split bundles, etc.
• View messages in a topic or multiple topics at once. Filter messages, colorize them. Save and reuse browse sessions.

There are missing features like multi-user support or message replay. See the Maintenance policy section for details.

• Download the docker-compose.yaml file and start it:

wget https://raw.githubusercontent.com/visortelle/dekaf/refs/heads/main/docker/compose/docker-compose.yaml

• Run docker compose up
• Wait a few seconds until Pulsar and Dekaf are ready and open http://localhost:8090
• Enjoy ☕️

We also run a demo application that produces data for two new tenants in this quick start.

If you don't see the demo-schema-types and demo-shop tenants in the tenant list, try to wait for a few seconds and reload the page.

If you want to disable the demo application, remove it from the docker-compose.yaml file.

• If the pulsar container cannot start, we recommend ensuring that you have 6GB or more Docker memory limit. We'll adjust the docker-compose memory for a lower limit later.
• In case, you observe bookie-related errors from the pulsar container, the simplest way to fix it is to remove the corresponding Docker volume. In case you need the volume data, make a backup first. Otherwise follow these steps:
  • Stop containers by running docker compose down
  • Run docker volume ls | grep pulsar-data to find the proper <volume_name>
  • Run docker volume rm <volume_name> to delete the volume
  • Restart containers by running docker-compose up

Dekaf is a part of the official apache/pulsar-helm-chart.

• Reported critical bugs are planned to be fixed in a short time after the open-source release.
• The codebase has some dead code and requires a little cleanup, but it's not in priority at this moment.
• Small features may be added in my spare time. If some company decide to sponsor complex features, it would be an ideal scenario.
• PRs are welcome! See the contributing guide.
• Tell me if you need a desktop version for MacOS and Linux. The Electron app is ready, and if there is any visible demand, I'll release it.

Thank you.