人工智能 Open AI解释一下 Raft 分布式一致性协议算法，并用伪代码实例说明。

Posted 2023-03-05 禅与计算机程序设计艺术

解释一下 Raft 分布式一致性协议算法，并用伪代码实例说明。

Raft 简介

Raft 分布式一致性协议算法是一种分布式一致性算法，用于管理分布式系统中的服务器之间的日志复制。其主要目的是确保所有服务器的状态一致，以确保系统的稳定性和可靠性。

Raft is a consensus algorithm for managing a replicated log. It produces a result equivalent to (multi-)Paxos, and it is as efficient as Paxos, but its structure is different from Paxos; this makes Raft more understandable than Paxos and also provides a better foundation for building practical systems. In order to enhance understandability, Raft separates the key elements of consensus, such as leader election, log replication, and safety, and it enforces
a stronger degree of coherency to reduce the number of states that must be considered. Results from a user study demonstrate that Raft is easier for students to learn than Paxos. Raft also includes a new mechanism for changing the cluster membership, which uses overlapping majorities t