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This article explores RocketMQ's high availability mechanism, focusing on DLedger's implementation of Raft-based leader election for distributed message middleware, covering both traditional and Controller mode architectures.
Apache RocketMQ 4.8.0 has been released, featuring extensive optimizations and bug fixes, with significant performance, functionality, and stability enhancements to the Raft‑based DLedger mode, including asynchronous pipeline processing, batch log replication, and various lock and cache improvements that boost throughput by multiple times.
This article explains how to build a highly available, high‑throughput, and horizontally scalable RocketMQ cluster by deploying multiple NameServers and using the Dledger mode to achieve fault‑tolerance, load distribution, and massive message handling for demanding business scenarios.