The official home of SpinelDB — a modern in-memory database built for the next generation of applications.

Fast. Safe. Intelligent. 🦀 ⚡️ 💎

SpinelDB is an open-source project dedicated to building a next-generation in-memory database that serves as a powerful, reliable, and feature-rich alternative to traditional solutions. We believe in combining the raw performance and memory safety of Rust with a sophisticated feature set, including an integrated intelligent caching engine, to empower developers to build faster and more resilient systems.

Our goal is to create a database that is not only blazingly fast but also observable, secure, and ready for high-availability deployments.

Our flagship project is the SpinelDB server, an all-in-one solution for your data storage and caching needs.

➡️ Explore the main repository: github.com/spineldb/spineldb

• 🚀 Redis-Compatible Core: Designed for a high degree of compatibility with the Redis command API, allowing you to use your favorite clients and tools.
• 🧠 Intelligent Caching Engine: A first-class citizen in SpinelDB. Go beyond simple key-value caching with:
  • Stale-While-Revalidate and Grace TTL for maximum performance and availability.
  • On-disk streaming for caching large objects without exhausting memory.
  • Tag-based purging (CACHE.PURGETAG) for instant, granular cache invalidation.
  • Declarative policies to automate caching workflows based on key patterns.
• 🛡️ Built for High Availability:
  • Cluster Mode: A multi-primary setup using a gossip protocol for node discovery and state propagation.
  • Warden: An external monitoring process that provides robust, quorum-based automated failover, ensuring data safety and preventing split-brain scenarios.
• 🦀 Written in Rust: We leverage the full power of Rust and the Tokio ecosystem to deliver:
  • Fearless Concurrency: A sharded, multi-threaded architecture that minimizes lock contention.
  • Memory Safety: Elimination of entire classes of common bugs at compile time.
  • Exceptional Performance: Asynchronous I/O for handling thousands of connections with minimal overhead.
• 🧰 Rich Feature Set: Includes robust persistence (AOF/SPLDB), Lua scripting, fine-grained Access Control Lists (ACLs), Pub/Sub, and advanced data structures like Streams and JSON.

We proudly build on some of the best technologies the open-source world has to offer:

• Language: Rust 🦀
• Asynchronous Runtime: Tokio 💨
• Concurrency: DashMap, Parking Lot
• Observability: Prometheus 📊, Tracing
• Cluster Communication: Gossip Protocol 📡

SpinelDB is a community-driven project, and we welcome contributions of all kinds. Whether you are a seasoned database engineer or a developer passionate about Rust, there are many ways to help.

• ⭐ Star our main repository to show your support!
• 💻 Contribute Code: Check out our open issues to find a good starting point. Pull requests are always welcome.
• 🐞 Report Bugs: If you find a bug, please create a detailed issue.
• 💡 Request Features: Have an idea for a new command or a cool feature? Let's discuss it in the issues.
• ✍️ Improve Documentation: Help us make our documentation clearer and more comprehensive.
• 📣 Spread the Word: Tell your friends and colleagues about SpinelDB!

• 💬 Discussions: Join the conversation in our GitHub Discussions.
• Follow us on X (Twitter): (Coming Soon!)
• Join our Discord/Slack: (Coming Soon!)

Let's build the future of in-memory data storage, together.