Apache BookKeeper is a scalable, fault-tolerant and low latency storage service optimized for append-only workloads.

It is suitable for being used in following scenarios:

• WAL (Write-Ahead-Logging), e.g. HDFS NameNode, Pravega.
• Message Store, e.g. Apache Pulsar.
• Offset/Cursor Store, e.g. Apache Pulsar.
• Object/Blob Store, e.g. storing state machine snapshots.

• Checkout the project website.
• Concepts: Start with the basic concepts of Apache BookKeeper. This will help you to fully understand the other parts of the documentation.
• Follow the Installation guide to set up BookKeeper.

Please visit the Documentation from the project website for more information.

For filing bugs, suggesting improvements, or requesting new features, help us out by opening a GitHub issue.

Subscribe or mail the user@bookkeeper.apache.org list - Ask questions, find answers, and also help other users.

Subscribe or mail the dev@bookkeeper.apache.org list - Join development discussions, propose new ideas and connect with contributors.

Join us on Slack - This is the most immediate way to connect with Apache BookKeeper committers and contributors.

We feel that a welcoming open community is important and welcome contributions.

1. See our installation guide to get your local environment setup.

2. Take a look at our open issues: GitHub Issues.

3. Review our coding style and follow our pull requests to learn more about our conventions.

4. Make your changes according to our contributing guide