MySQL master-slave synchronization is a popular database solution that allows data synchronization between multiple database servers. This solution not only improves the efficiency of data backup, but also offloads the read load of the primary database, thereby improving the performance and reliability of the entire system.
1. The basic principle of MySQL master-slave synchronization.
MySQL master-slave synchronization is based on binary logs. The master database records data changes in the binlog, while the secondary database takes those changes by reading the binlog and applies them to its own database. In this way, the slave database can maintain data consistency with the master database.
2. How to configure MySQL master-slave synchronization.
Primary database: mysql57.26 port 3306
From database: mysql57.26 port 3308
Database connection tool: N**icat Premium 15
Specify the configuration file startup data: mysqld --defaults-file=configuration file.
First, you need to enable the binlog function in the configuration file of the primary database and specify the databases to be synchronized. Then, configure the unique identity of the primary database so that the slave database is able to connect to the primary database.
Start the primary database.
Use n**icat to connect to the master database, add the MySQL master server user, user name: sl**euser, password: 123456, after the new addition, perform user authorization, and reload the MySQL permission system.
View the status of the current primary database and reserve the file and position information for the MySQL slave server.
Configure the database to be synchronized and configure the unique identity of the primary database.
Examine. /data/auto.If the server-uid parameter in cnf is the same, change the server-uuid of the slave database to 2674149f-5083-11e8-be4b-080027a1f331
Start from the database.
Establish a synchronous connection to the primary database.
Check whether the master-slave server is successful, and the mysql slave server runs sql:show sl**e status;If sl**e io running: yes & sl**e sql running: yes, the MySQL master-slave succeeds.
After the configuration is complete, you can start the synchronization process from the database. This process continuously reads the binlog of the primary database and applies the changes to the slave database.
3. Advantages of MySQL master-slave synchronization.
Through master-slave synchronization, you can distribute data backup tasks to multiple slave databases, greatly improving backup efficiency. In addition, since backups can be made at any time from the database, the availability of data is guaranteed at all times.
When there are a large number of read requests, you can offload some of the requests to the slave database, thereby reducing the read load on the primary database. This can improve the performance and reliability of the entire system.
The scalability of the system can be further improved by adding more slave databases. This way, when the system needs to process more data or more users, it can meet the demand by adding slave databases.
Fourth, summary. MySQL master-slave synchronization is an efficient data backup and reading solution. It not only improves the efficiency of data backup, but also offloads the read load of the primary database, thereby improving the performance and reliability of the entire system. If you're using a MySQL database, consider using a master-slave synchronization solution to improve your data management and application efficiency.
List of high-quality authors