Home Database Mysql Tutorial Achieving data redundancy and expansion: application cases of MySQL master-slave replication technology in cluster environments

Achieving data redundancy and expansion: application cases of MySQL master-slave replication technology in cluster environments

Sep 08, 2023 pm 04:36 PM
master-slave replication Data redundancy Cluster environment

Achieving data redundancy and expansion: application cases of MySQL master-slave replication technology in cluster environments

Realizing data redundancy and expansion: Application cases of MySQL master-slave replication technology in cluster environments

Introduction:
With the development of the Internet, the amount of data has increased With the continuous growth and the number of users, the traditional stand-alone database can no longer meet the needs of high concurrency and high availability. In this context, distributed databases have become one of the popular solutions. As one of the most commonly used relational databases, MySQL's master-slave replication technology has also received widespread attention in distributed databases. This article will introduce the application cases of MySQL master-slave replication technology to achieve data redundancy and expansion in a cluster environment, and provide corresponding code examples.

1. Introduction to MySQL master-slave replication technology
MySQL master-slave replication technology is a data replication method based on binary logs. It records the modification operations on the master database into the binary log in real time, and transmits the binary log to the slave database for replay, thereby ensuring data consistency between the master and slave databases. In a cluster environment, we can achieve data redundancy and expansion by deploying multiple slave libraries on different servers.

2. Deployment of cluster environment

  1. Main library configuration
    First, we need to build the MySQL main library on a server. Assume that the operating system we are using is Linux and the database version is MySQL 5.7. The following are some commonly used main library configuration parameters:

[mysqld]
server-id=1
log_bin=mysql-bin
binlog_format=row

  1. Slave library configuration
    Build MySQL slave library on other servers. It should be noted that the server ID of the slave database must be unique and different from the master database. The following is an example configuration of a slave library:

[mysqld]
server-id=2
relay_log=mysql-relay-bin
read_only=1

3. Construction of cluster environment

  1. Main library settings
    On the main library, we need to create a user for replication and give it the corresponding permissions. Assume that the user name we created is replication and the password is 123456. The corresponding SQL command is as follows:

CREATE USER 'replication'@'%' IDENTIFIED BY '123456';
GRANT REPLICATION SLAVE ON . TO 'replication'@'%';

  1. Slave database settings
    On the slave database, we need to configure it to connect to the main database for data replication. Assume that the IP address of the main database is 192.168.1.100, the user name is replication, the password is 123456, and the ID of the slave database is 2. The corresponding SQL command is as follows:

CHANGE MASTER TO
MASTER_HOST ='192.168.1.100',
MASTER_USER='replication',
MASTER_PASSWORD='123456',
MASTER_LOG_FILE='mysql-bin.000001',
MASTER_LOG_POS=123456;

  1. Start replication
    After the slave library is set up, we need to start the replication function. First execute the following command to start replication:

START SLAVE;

Then, check the replication status through the following command:

SHOW SLAVE STATUSG;

If both "Slave_IO_Running" and "Slave_SQL_Running" in the displayed content are "Yes", it means that replication is running normally.

4. Application Cases: Data Redundancy and Expansion
In a cluster environment, we can distribute read and write requests to multiple slave libraries to achieve data redundancy and expansion. The following is a simple application case to demonstrate the effect of data redundancy and expansion.

  1. Create test table
    Create a test table on the main database to store user information.

CREATE TABLE user (
id INT(11) NOT NULL AUTO_INCREMENT,
name VARCHAR(20 ) NOT NULL,
age INT(3) NOT NULL,
PRIMARY KEY (id)
) ENGINE=INNODB DEFAULT CHARSET=utf8;

  1. Insert test data
    Insert some test data on the main library.

INSERT INTO user (name, age) VALUES ('Alice', 25), ('Bob', 30 ), ('Chris', 35);

  1. Query data
    In the application, we can send read requests to any slave library. Assume that our application server has two slave libraries whose IP addresses are 192.168.1.101 and 192.168.1.102. We can send read requests through the following code example:

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.ResultSet;
import java.sql.Statement;

public class ReadRequestDemo {

public static void main(String[] args) {
    String url = "jdbc:mysql://192.168.1.101:3306/test";
    String username = "username";
    String password = "password";

    try {
        Connection conn = DriverManager.getConnection(url, username, password);
        String sql = "SELECT * FROM user";
        Statement stmt = conn.createStatement();
        ResultSet rs = stmt.executeQuery(sql);

        while (rs.next()) {
            int id = rs.getInt("id");
            String name = rs.getString("name");
            int age = rs.getInt("age");
            System.out.println("id=" + id + ", name=" + name + ", age=" + age);
        }

        rs.close();
        stmt.close();
        conn.close();
    } catch (Exception e) {
        e.printStackTrace();
    }
}
Copy after login

}

Through the above code example, we can see that the slave library returns the test data inserted on the main library. Since we have configured multiple slave libraries, read requests can be distributed to different slave libraries, thereby achieving data redundancy and expansion.

Conclusion:
In the application case of MySQL master-slave replication technology in a cluster environment, we achieve data redundancy and expansion by building a master database and multiple slave databases. Through reasonable configuration and tuning, the concurrency performance and scalability of the system can be improved. At the same time, master-slave replication technology can also provide high availability and disaster recovery capabilities for data. For application scenarios that need to handle a large number of concurrent read operations, MySQL master-slave replication technology is a solution worth considering.

The above is the detailed content of Achieving data redundancy and expansion: application cases of MySQL master-slave replication technology in cluster environments. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Repo: How To Revive Teammates
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
4 weeks ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

How to implement master-slave replication of MySQL database in PHP How to implement master-slave replication of MySQL database in PHP May 17, 2023 am 08:18 AM

With the rapid development of the Internet, Web applications are increasingly integrating database operations. MySQL is a world-renowned relational database system that is widely used. In highly concurrent web applications, MySQL master-slave replication is an important way to improve database performance and availability. This article will introduce how to use PHP to implement master-slave replication of MySQL database. 1. What is MySQL master-slave replication? MySQL master-slave replication refers to copying data from one MySQL database server to another server.

Building a Highly Available MySQL Cluster: Best Practice Guide for Master-Slave Replication and Load Balancing Building a Highly Available MySQL Cluster: Best Practice Guide for Master-Slave Replication and Load Balancing Sep 09, 2023 am 10:57 AM

Building a Highly Available MySQL Cluster: Best Practice Guide for Master-Slave Replication and Load Balancing In recent years, with the rapid development of the Internet, the database has become one of the core data storage and processing engines for most web applications. In this scenario, high availability and load balancing have become important considerations in database architecture design. As one of the most popular open source relational databases, MySQL's cluster deployment solution has attracted much attention. This article will introduce how to implement a highly available database cluster through MySQL master-slave replication and load balancing.

Redis data redundancy in PHP applications Redis data redundancy in PHP applications May 17, 2023 pm 06:10 PM

Redis is a high-performance in-memory database that has been widely used in web applications, mobile applications, games and other fields since its birth. In PHP applications, Redis is also widely used to implement functions such as data caching, data storage, and message queues. Its high performance and simplicity of use are already well known to developers. However, when using Redis, in order to ensure the correctness and reliability of data, data redundancy is often necessary. What is data redundancy? Data redundancy refers to storing the same data in different places. In Redi

Data master-slave replication technology in MySQL Data master-slave replication technology in MySQL Jun 14, 2023 pm 02:10 PM

MySQL database is a very popular relational database management system that supports a variety of data replication technologies, among which the more commonly used is master-slave replication technology. This article will introduce the data master-slave replication technology in MySQL, including principles, implementation methods, common problems and countermeasures. 1. Principle of master-slave replication technology The master-slave replication technology in MySQL can copy the data of a MySQL database to other servers to achieve data backup, load balancing, read-write separation and other functions. Its basic principle is to convert the main database

Detailed explanation of the master-slave replication function of Redis Detailed explanation of the master-slave replication function of Redis May 11, 2023 am 10:00 AM

Redis is an open source memory-based key-value storage system that is commonly used in scenarios such as caching, queuing, and real-time data processing. In large-scale applications, in order to improve the availability and performance of Redis, it is often necessary to adopt a distributed architecture, in which master-slave replication is a commonly used mechanism. This article will introduce the master-slave replication function of Redis, including definition, principle, configuration and application scenarios. 1. Definition of Redis master-slave replication refers to automatically synchronizing the data of one Redis node (i.e. master node) to other nodes (i.e. slave node).

How to configure master-slave replication of MySQL database? How to configure master-slave replication of MySQL database? Jul 13, 2023 pm 10:05 PM

How to configure master-slave replication of MySQL database? Master-slave replication of MySQL database is a common data backup and high availability solution. By configuring master-slave replication, you can synchronize data from one MySQL server (master server) to another (slave server), thereby improving database availability and performance. The following describes how to configure master-slave replication in a MySQL database and provides corresponding code examples. Make sure the MySQL server is installed and started. First, make sure MySQL is installed on your system.

Master-slave replication and high availability architecture in MySQL Master-slave replication and high availability architecture in MySQL Sep 09, 2023 pm 12:03 PM

Master-slave replication and high-availability architecture in MySQL As Internet applications and data volumes continue to grow, the high availability and scalability of the database are becoming more and more important. As a widely used open source relational database, MySQL provides master-slave replication and high-availability architecture solutions. Master-slave replication refers to the process of using a MySQL database instance as the master database and replicating its data to one or more slave databases (slave). This replication method can achieve redundant backup of data and separation of reading and writing.

How to implement master-slave replication of Memcached database in PHP How to implement master-slave replication of Memcached database in PHP May 15, 2023 pm 06:40 PM

Memcached is an open source, high-performance distributed memory object caching system that can be used to speed up web applications and performs particularly well in large-scale data caching. For this system, master-slave replication is a very important function, which can be used to ensure data reliability and high availability. This article will introduce how to use PHP to implement master-slave replication of Memcached database. Introduction to the master-slave mode The master-slave mode is a distributed structure of the Memcached server. It consists of at least two servers: one

See all articles