Sep 1, 2022 · Databases

Redis Replication Evolution: From SYNC to PSYNC‑AOF and Shared Buffers

This article traces the development of Redis master‑slave replication from the original SYNC mechanism through PSYNC, PSYNC2, disk‑less replication, shared replication buffers, and the Baidu Cloud PSYNC‑AOF solution, highlighting design challenges, optimizations, and future directions.

AOFDisklessPSYNC

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Redis Replication Evolution: From SYNC to PSYNC‑AOF and Shared Buffers

High Availability Architecture

Feb 23, 2022 · Databases

Redis Master‑Slave Replication Memory Consumption and the Shared Replication Buffer Design

This article analyzes the excessive memory usage and blocking issues in Redis master‑slave replication, explains how the upcoming Redis 7.0 shared replication buffer solves these problems, and details the design, implementation, and key considerations of the shared buffer mechanism.

Database InternalsMemory OptimizationReplication

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Redis Master‑Slave Replication Memory Consumption and the Shared Replication Buffer Design