Maelstrom is a distributed-systems workbench by the Jepsen team. It provides standardized JSON-based protocols and test harnesses (via Jepsen) to validate the behavior of custom toy systems—like commutative sets or transactional key-value stores—under simulated failure conditions. You implement your server in any language, connect through stdin/stdout, and the framework injects network disruptions, partitions, and consistency checks.

Features

  • JSON protocol-based node interface over stdin/stdout
  • Built-in tests for common distributed patterns
  • Simulated network partitions and failures
  • Language-agnostic node implementation
  • Ideal for teaching/testing consensus algorithms
  • Actively used in distributed-systems workshops

Project Samples

Project Activity

See All Activity >

Categories

Frameworks

License

Eclipse Public License

Follow Maelstrom

Maelstrom Web Site

Other Useful Business Software
MongoDB Atlas runs apps anywhere Icon
MongoDB Atlas runs apps anywhere

Deploy in 115+ regions with the modern database for every enterprise.

MongoDB Atlas gives you the freedom to build and run modern applications anywhere—across AWS, Azure, and Google Cloud. With global availability in over 115 regions, Atlas lets you deploy close to your users, meet compliance needs, and scale with confidence across any geography.
Start Free
Rate This Project
Login To Rate This Project

User Reviews

Be the first to post a review of Maelstrom!

Additional Project Details

Registered

2025-07-08