SlateDB

An embedded storage engine built on object storage that delivers LSM-tree performance with S3-tier economics.

SlateDB redefines the storage layer by using S3 (or any object store) as primary storage rather than a backup target. It implements a Log-Structured Merge-tree (LSM-tree) architecture to provide high-write throughput and consistent reads while maintaining the durability of a cloud-native backend. By treating object storage as a first-class citizen, SlateDB eliminates the need for expensive local SSD management in distributed systems. It is written in Rust, ensuring memory safety and high performance for modern cloud applications that require petabyte-scale capacity without the traditional overhead of managed block storage.

https://github.com/slatedb/slatedb