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Initial use of haproxy brief introduction HAProxy provides load balancing and proxy based on tcp and http applications. It is a fast, free and reliable solution Although the performance and stability of HAProxy are not as good as lvs, it is much better than lvs in function install On centos7, HAProxy can be inst ...

tcp programming -- client obtains server input and output stream Train of thought: Step 1: instantiate a ServerSocket object (server socket) to wait for requests on the network (that is, the socket waiting to connect) Step 2: call the accept() method to return a socket object connected to the client socket object Step 3: the output stream obtai ...

Environmental Science: Virtual machine: VMware 12 Pro Linux: rhel-server-6.4-x86_64 MYSQL: 5.7.21 1. Download mysql In official website: http://dev.mysql.com/downloads/mysql/ , select the following version of mysql to download: 2. Unzip the installation package in / usr/local and rename it mysql [root@mys ...

Get mirror image docker run -p 33006:3306 --name mysql-master -v /data/docker/mysql/conf/:/etc/mysql/mysql.conf.d/:rw -v /data/docker/mysql/logs:/var/log/mysql/:rw -v /data/docker/mysql/data/:/var/lib/mysql/:rw -e MYSQL_ROOT_PASSWORD=123456 -d mysql:5.7 Enter docker mysql docker exec -it mysql /bin/bash docker m ...

RPC process details Implementation content json serialization zookeeper implements service registration on the server side and service discovery and load balancing on the client side Automatically scan the interface provided by the server and register it in zookeeper Automatically generate client dynamic proxy objects socket communication M ...

CentOS 6.5 192.168.1.84 host CentOS 6.5 192.168.1.83 slave 1, Primary server configuration: Create synchronization user and specify server address [root@node04 ~]# mysql -u root -p111111 mysql>use mysql; mysql>grant replication slave on *.* to 'tongbu'@'192.168.1.84' identified by '123456'; mysql>flush privileges # ...

Thank you for your reference- http://bjbsair.com/2020-04-01/tech-info/18392.html One of the application scenarios of Netty in the project: the message push function can be used to push messages to all users, or to specify a user. The spring boot project is created. The background server uses Netty technology, and the front page uses WebSocket t ...

System Convention Download directory of installation files / opt/software Mysql directory installation location: usr/local/mysql Database save location / data/mysql Log saving location: data/logs/mysql Dependency package required for MySql installation Before installing mysql, you'd better install the dependency package ...

Publishing service ServiceBean Release entrance ServiceBean implements the afterpropertieset() method of the interface InitializingBean public void afterPropertiesSet() throws Exception { //Set provider, application, registers //Publishing service if (!isDelay()) { export(); } } If the service has ...

Adapter mode In life, there are two, three and round charging plugs. If you want to make these plugs work, you need a multi-functional adapter Basic introduction Adapter Pattern is a kind of structural pattern. It can transform the interface of a class into another interface representation expected by the client. Its main purpose is compatib ...