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1. Docker sets up Redis Master+Sentinel Monitoring Set up environment: Ubuntu 18.04.3 Docker 18.09.7 Download Mirrordocker pull redis (default redis:latest) Get the configuration file and modify it wget http://download.redis.io/redis-stable/redis.conf wget http://download.redis.io/redis-stable/sentinel.conf # Primary four slave port ...

AOF mode: log every operation Advantages: the security is much higher than RDB; Disadvantages: the efficiency is much lower than RDB; To configure: Edit redis.conf [root@localhost redis]# vi redis.conf Pull down to find: The following picture: appendonly no the aof mode is turned off by default. We change it to yes to ...

The previous article gives the process of manual compilation and installation of redis, and gives the process of online installation of redis when simulating the establishment of redis cluster, so I want to write a redis script for online installation. In this paper, I mainly use shell functions to realize and verify the process of online ins ...

In a real development project, an exposed interface is often faced with a large number of repeated requests submitted in an instant. If you want to filter out the repeated requests and cause damage to the business, you need to implement idempotent! Let's explain the concept of idempotent: Any number of executions has the same impact as a ...

Preface 1.1 principle The core of websocket is to store the session information of successful handshake into static variables. However, there are many servers in the distributed system, Tomcat, which use nginx to forward to different tomcat, so it can not guarantee that this Tomcat stores the sessio ...

redis-benchmark -t set,lpush -n 100000 -q SET: 38550.50 requests per second //Processing 38000 set requests per second LPUSH: 37821.48 requests per second //Process 37000 lpush requests per second ### Script execution times redis-benchmark -n 100000 -q script load"redis.call('set','foo','bar')" script loadredis.call('set','foo','bar'): 3705 ...

How to use redis to generate serial number Summary Principle introduction Flow chart 1. Initializing serial number information into cache 2. Generate serial number code implementation 1. Serial number entity class 2. Initialize serial number into cache 3. Generate serial number Code testing Gene ...

Setting up local environment records for virtual machine 1.vmware installation 1. Enter the vm website, Download page 2. Select trial, or log in 3. installation 4. Input the secret key Baidu to test UG5J2-0ME12-M89WY-NPWXX-WQH88 on February 13, 2020 2. Installation of VMware centos7 1. Download ce ...

ThreadPoolExecutor Thread Pool Source Analysis White teeth want to say I haven't updated it for a long time, not because I didn't learn, but because I didn't know how to write it. At the same time, there was a voice telling me that public numbers are flying all over the world. There are more people writing public numbers than reading public nu ...

Preface We can publish a subscription to the channel in redis. Anyone who listens to the channel can receive the published content! redis subscription listening configuration class   image.png The code is as follows: RedisListenerConfig.java package com.wzq.redis.config; import org.springframe ...