Litestream: Revamped
a year ago
- #Open Source
- #Database Replication
- #SQLite
- Litestream is an open-source tool that enables reliable recovery of SQLite databases from object storage.
- Originally designed to prevent data loss by streaming SQLite WAL updates to S3, Litestream has evolved with new features inspired by LiteFS.
- New features include point-in-time restores using LTX files for efficient page changeset management, similar to LSM trees.
- Introduced CASAAS (Compare-and-Swap as a Service) leveraging modern object stores for single-instance replication without external dependencies like Consul.
- Added lightweight read replicas via a VFS-based layer, allowing direct page fetching from S3-compatible storage with caching for performance.
- Enhanced scalability to synchronize hundreds or thousands of databases from a single process using LTX.
- Future potential includes supporting AI coding agents with PITR (Point-In-Time Recovery) for rollbacks and forks.