What is redis cluster split brain?
Redis cluster brain splitting means that due to network problems, the redis master node, the redis slave node and the sentinel cluster are in different network partitions. At this time, the sentinel cluster cannot sense the existence of the master, so Promote the slave node to the master node. (Recommended learning: redis video tutorial )
There are two different master nodes at this time, just like a brain split into two.
In the cluster split-brain problem, if the client continues to write data based on the original master node, the new master node will not be able to synchronize the data. When the network problem is resolved, the sentinel cluster will replace the original master node with the original master node. The node is reduced to a slave node. At this time, synchronizing data from the new master will cause a large amount of data loss.
Solution
There are two parameters in the redis configuration file
min-slaves-to-write 3 min-slaves-max-lag 10
The first parameter Represents the minimum number of slaves connected to the master
The second parameter indicates the maximum delay time for the slave to connect to the master
If the number of slaves connected to the master is less than the first parameter, and the ping delay If the time is less than or equal to the second parameter, then the master will reject the write request. After configuring these two parameters, if a cluster brain split occurs, the original master node will reject the write request from the client, which can reduce the amount of data synchronization. of data lost.
Note: The parameters in the newer version of the redis.conf file have become
min-replicas-to-write 3 min-replicas-max-lag 10
The data loss problem in the case of asynchronous replication in redis can also use these two parameters
The above is the detailed content of How to prevent split-brain in redis cluster. For more information, please follow other related articles on the PHP Chinese website!

Redis是现在最热门的key-value数据库,Redis的最大特点是key-value存储所带来的简单和高性能;相较于MongoDB和Redis,晚一年发布的ES可能知名度要低一些,ES的特点是搜索,ES是围绕搜索设计的。

本篇文章给大家带来了关于redis的相关知识,其中主要介绍了关于redis的一些优势和特点,Redis 是一个开源的使用ANSI C语言编写、遵守 BSD 协议、支持网络、可基于内存、分布式存储数据库,下面一起来看一下,希望对大家有帮助。

本篇文章给大家带来了关于redis的相关知识,其中主要介绍了Redis Cluster集群收缩主从节点的相关问题,包括了Cluster集群收缩概念、将6390主节点从集群中收缩、验证数据迁移过程是否导致数据异常等,希望对大家有帮助。

本篇文章给大家带来了关于redis的相关知识,其中主要介绍了Redis实现排行榜及相同积分按时间排序,本文通过实例代码给大家介绍的非常详细,对大家的学习或工作具有一定的参考借鉴价值,希望对大家有帮助。

本篇文章给大家带来了关于redis的相关知识,其中主要介绍了关于原子操作中命令原子性的相关问题,包括了处理并发的方案、编程模型、多IO线程以及单命令的相关内容,下面一起看一下,希望对大家有帮助。

本篇文章给大家带来了关于redis的相关知识,其中主要介绍了bitmap问题,Redis 为我们提供了位图这一数据结构,位图数据结构其实并不是一个全新的玩意,我们可以简单的认为就是个数组,只是里面的内容只能为0或1而已,希望对大家有帮助。

本篇文章给大家带来了关于redis的相关知识,其中主要介绍了Redis实现排行榜及相同积分按时间排序,本文通过实例代码给大家介绍的非常详细,下面一起来看一下,希望对大家有帮助。

本篇文章给大家带来了关于redis的相关知识,其中主要介绍了关于实现秒杀的相关内容,包括了秒杀逻辑、存在的链接超时、超卖和库存遗留的问题,下面一起来看一下,希望对大家有帮助。


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.

EditPlus Chinese cracked version
Small size, syntax highlighting, does not support code prompt function

Dreamweaver Mac version
Visual web development tools

Notepad++7.3.1
Easy-to-use and free code editor

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft
