scylladb/scylla
Scylla
Scylla is a distributed wide column NoSQL database designed as a high-performance data store. It functions as a Cassandra compatible database and a DynamoDB compatible store, implementing a shared-nothing architecture built on an asynchronous event-driven framework.
The system emulates cloud-based APIs to support applications built for proprietary cloud protocols and implements the Cassandra Query Language for high-throughput workloads. This allows for the migration of cloud workloads to self-hosted environments while maintaining API compatibility.
The project covers distributed data storage and NoSQL database management, utilizing a SQL-like syntax for data retrieval and manipulation across multiple nodes to ensure high availability and fault tolerance.
Features
- NoSQL - Functions as a high-performance NoSQL database designed for large-scale distributed workloads.
- Cassandra-Compatible Databases - Acts as a high-performance, distributed NoSQL database compatible with the Cassandra Query Language and API.
- Distributed Sharding Architectures - Employs a distributed sharding architecture with consistent hashing to balance data across nodes and cores.
- Distributed Storage - Implements a distributed storage architecture ensuring high availability and fault tolerance across multiple nodes.
- DynamoDB-Compatible Databases - Provides a distributed NoSQL store that emulates the DynamoDB API for cloud-native application support.
- Log-Structured Merge-Trees - Utilizes a log-structured merge-tree storage engine to optimize write throughput via sequential I/O.
- Wide-Column Stores - Implements a wide-column store model for scalable, high-performance data management.
- Thread-Per-Core Architectures - Built on a thread-per-core architecture to eliminate context switching and maximize CPU efficiency.
- Shared-Nothing Architectures - Implements a shared-nothing architecture to isolate state and eliminate lock contention between CPU cores.
- DynamoDB Connectors - Provides compatibility with DynamoDB connectors to support applications built for the cloud protocol.
- Database Protocol Compatibility - Implements the binary wire protocol of Cassandra to ensure compatibility with existing drivers and clients.
- Distributed SQL Querying - Provides distributed query execution using the Cassandra Query Language (CQL).
- SQL Query Interfaces - Implements a SQL-like query interface using the Cassandra Query Language (CQL).
- Cassandra Connectors - Provides compatibility with Cassandra connectors for seamless data migration and tool integration.
- Cloud-to-Self-Hosted Migrators - Enables the transition of cloud workloads to self-hosted environments while maintaining DynamoDB API compatibility.
- Cloud API Emulators - Emulates the DynamoDB API to allow applications to transition from cloud to self-hosted environments.
- Event-Driven Frameworks - Utilizes the Seastar asynchronous event-driven framework to achieve high concurrency and low latency.
- Database Systems - High-performance Cassandra alternative.
- NoSQL Database Internals - High-performance, low-latency distributed NoSQL database engine.
- Relational Databases - High-performance NoSQL store compatible with Cassandra.
Star history
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