21CTO

Dec 11, 2015 · Databases

How Amazon Dynamo Ensures High Availability with Consistent Hashing

The article explains Amazon’s Dynamo distributed key‑value store architecture, covering its decentralized design, consistent hashing with virtual nodes, replication strategies, quorum‑based read/write parameters, vector‑clock versioning, failure detection, hinted handoff, scaling mechanisms, and how these techniques together provide high availability, scalability, and reliability.