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Ctrip Technology
Ctrip Technology
Jul 16, 2020 · Databases

Design and Implementation of Bidirectional Redis Synchronization Across IDC: Cycle Break, LWW, Vector Clock, Tombstone, GC, and Expire

This article details Ctrip's practical design and implementation of a bidirectional Redis synchronization system across data centers, covering replication loop breaking, conflict resolution with Last Write Wins and Vector Clocks, tombstone handling, garbage collection strategies, and expiration policies to ensure data consistency.

CRDTGarbage CollectionRedis
0 likes · 12 min read
Design and Implementation of Bidirectional Redis Synchronization Across IDC: Cycle Break, LWW, Vector Clock, Tombstone, GC, and Expire
360 Zhihui Cloud Developer
360 Zhihui Cloud Developer
Apr 24, 2018 · Databases

How Dynamo Achieves High‑Availability in Distributed Key‑Value Stores

This article explains Dynamo, the decentralized key‑value storage system, covering its design goals, consistent‑hashing partitioning with virtual nodes, replication strategies, quorum‑based consistency, conflict resolution with vector clocks, hinted handoff, Merkle‑tree synchronization, and gossip‑based failure detection.

Distributed StorageDynamoHigh Availability
0 likes · 9 min read
How Dynamo Achieves High‑Availability in Distributed Key‑Value Stores