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The following actions are for specifying an unsynchronized Library Binlog format = row mode View the binlog mode of the master and slave mysql> show slave status\G *********************** 1. row ************************* Slave_IO_State: Waiting for master to send event Master_Host: 192.168.22.171 Master_User: rep Master_Port: 330 ...

Scavenging Logon Function Demo-Postman Simulated Scavenging Request Scavenging Logon Function - Polling or Long Connection WebSocket - Zxing Generate 2D Code Scavenging login is actually a login request, but the information is stored on the user's mobile phone. It also needs two-dimensional code to verify whether the matching method can be used ...

Welcome to join the operation and maintenance development technology exchange group (QQ:722381733) I. Redis Service Introduction: Redis is simply a database, a database container used to store the cache. It is mainly designed to make the project data write into the cache and provide users with a more comfortable experience. Or it can also b ...

1. pom import dependency <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-redis</artifactId> </dependency> <dependency> <groupId>redis.clients</groupId> <artifactId>jedis</artifactId> </depe ...

Redis implements that each service connected to websocket is bound to a unique user. Save to redis through user account = websocket fd. mysql implements the offline message pool. If a user is not online, messages sent to him by other users are temporarily stored in mysql. When the user is online, it is taken out from the offline message pool an ...

Celery introduction Cellery is a simple, flexible and reliable distributed system dealing with a large number of messages, and provides the necessary tools to maintain such a system. It is a task queue that focuses on real-time processing and supports task scheduling. What is task queue Task queue: a mechanism to distribute tasks between thread ...

I. modify the configuration file #Start port port 5001 #Background operation daemonize yes #Process ID file storage location pidfile /var/run/redis_6379.pid #Log ID file storage location logfile /home/whqlkj/redis-cluster/5001/redis-server.log #Data file storage location dir /home/whqlkj/redis-cluster/5001/ #AOF persistence appendo ...

Blog Outline:I. Redis cluster related conceptsII. Deployment of Redis cluster 1. Deployment environment 2. Configure Redis instance 3. Configure multiple Redis instances of node06 host 4. The host node01 is installed and configured with the running environment of ruby to facilitate the management of Redis cluster 5. Configure each node in th ...

J2Cache is a two-level caching framework currently being used by OSChina. First level cache usage Ehcache , second level cache uses Redis  . Because a large number of cache reads will cause L2 network to become the bottleneck of the whole system, the goal of L1 is to reduce the number of L2 reads. This caching framework is mainly used in ...

Catalog Database connection pool pymsql linked database Database connection pool version Database connection pool pymsql linked database import pymysql conn = pymysql.connect(host='127.0.0.1', port=3306, user='root', passwd='123456', db='s8day127db') cursor = conn.cursor(cursor=pymysql.cursors.D ...