PNUTS is a distributed key-value database system designed for web-scale online transaction processing workloads. It provides a flexible schema supporting entity-attribute-value storage, with data partitioned across nodes and replicated for fault tolerance. The system uses a centralized coordinator for metadata management and transaction coordination, employing multi-version concurrency control to support snapshot isolation and serializable transactions.
- Developer
- Country of Origin
- US
- Start Year
- 2008
- Project Type
- Internal / Non-Public
- Written in
- Java
- Operating Systems
- All OS with Java VM, Linux
- License
- Proprietary
PNUTS is a distributed key-value database system designed for web-scale online transaction processing workloads. It provides a flexible schema supporting entity-attribute-value storage, with data partitioned across nodes and replicated for fault tolerance. The system uses a centralized coordinator for metadata management and transaction coordination, employing multi-version concurrency control to support snapshot isolation and serializable transactions.
History
Developed at Yahoo Research, PNUTS was introduced in 2008 to address scalability challenges in hosting web applications. The architecture features a master-slave design with data partitioning by entity identifier and primary-backup replication. It was utilized internally for various Yahoo services but was not released as open-source software.
Development focus gradually shifted as cloud-native database technologies emerged, leading to the project's eventual discontinuation without a formal public announcement.
