From the webpage:
Bitsy is a small, fast, embeddable, durable in-memory graph database that implements the Blueprints API.
Features
- Support for most Blueprints features including key indices and threaded transactions
- ACID guarantees on transactions
- Designed for multi-threaded OLTP applications
- Implements optimistic concurrency control
- Data stored in readable text files
- Serialization using the Jackson JSON processor
- Recovers cleanly from power failures and crashes provided the underlying file system supports metadata journaling, like NTFS, ext3, ext4, XFS and JFS (not FAT32 or ext2)
- Supports online backups through a JMX interface
Just in time for the weekend!
Enjoy!