ScyllaDB
More info
- Creator
- Avi Kivity, Dor Laor
- Released
- Owner
- ScyllaDB Inc.
- Type
- Wide-column NoSQL
- License
- Source-available (open-core)
- Website
- scylladb.com
- Source
- github.com/scylladb/scylladb
- Wikipedia
- en.wikipedia.org
Drop-in reimplementation of Cassandra in C++ with a shard-per-core architecture — 5–10× lower latency and higher throughput on the same hardware.
Built on Seastar (an async, lock-free, shared-nothing framework). Each CPU core owns its slice of data and talks to others via message passing. No page cache — direct AIO for explicit I/O control. Supports both Cassandra CQL and DynamoDB protocols.
Sweet spot: workloads that used to need 30 Cassandra nodes run on 6. Discord, Disney+, Comcast use it. The open-source version still exists but ScyllaDB Inc. has trimmed which features are free since 2024.