CRAQ
What is CRAQ?
CRAQ (Chain Replication with Apportioned Queries) is a data-center focused storage system capable of good availability, high throughput, and low latency, while providing a sliding scale of read consistency operations (from eventual to strong consistency guarantees). Special consideration is given to high-performance support for cross-data-center replication, using geo-diversity for performance and fault-tolerance reasons.
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Publications
- Object Storage on CRAQ: High-throughput chain replication for read-mostly workloads. Jeff Terrace and Michael J. Freedman. Proc. USENIX Annual Technical Conference (USENIX ‘09), San Diego, CA, June 2009. [pdf]