What is mysql hot backup

MySQL hot backup is a database backup method that performs backup and recovery during operation. Its advantages are: 1. Real-time, the data on the backup server is almost synchronized with the data of the main database; 2. Scalable It can build a distributed backup system; 3. Recovery function can switch the backup server to the main database and quickly restore the normal operation of the business.

The operating environment of this tutorial: windows10 system, mysql8.0.16 version, DELL G3 computer.

MySQL hot backup is a database backup method that performs backup and recovery on the fly. It allows databases to be replicated and backed up in ongoing production environments without stopping or impacting application operations.

MySQL is a commonly used relational database management system that is widely used in applications and websites of all sizes. However, database backup and recovery is one of the key steps to ensure data security and business continuity. Traditional backup methods usually require stopping the operation of the database, causing applications to be unable to access the database, thus affecting the normal operation of the business.

In order to solve this problem, MySQL hot backup came into being. Hot backups use MySQL's replication capabilities to allow operations to continue while the database is being backed up. It uses the principle of master-slave replication to copy real-time data to the backup server. This way, applications can continue to access the primary database, while the data on the backup server remains synchronized with the primary database.

In order to perform hot backup, the backup server needs to be set up as the slave database of the master database. The slave database will connect to the master database and continuously replicate data from the master database. All write operations on the primary database are recorded and replicated on the secondary database to maintain consistency between the two databases.

When backup is required, you only need to switch the backup server to the read-write mode of the primary database and set it to the primary database. In this way, the primary database becomes the backup server, and the previous primary database becomes the secondary database. Then, the data on the backup server is the latest backup.

1. One of the main advantages of MySQL hot backup is its real-time nature. The data on the backup server is almost synchronized with the data in the primary database, so the backup data is guaranteed to be up-to-date. This is particularly important for some applications that require high real-time data.

2. Another advantage is scalability. By using multiple slave servers, a distributed backup system can be built. In this way, backup tasks can be assigned to different servers and executed in parallel, thereby improving backup efficiency and performance.

3. In addition, MySQL hot backup also provides recovery functions. When the main database fails or goes down, the backup server can be switched to the main database and the normal operation of the business can be quickly restored. The recovery process is relatively simple and fast, saving a lot of time and cost.

Although MySQL hot backup has many advantages, there are also some considerations to consider. The first is the resource requirements of the backup server. Hot backup requires a hardware configuration comparable to that of the primary database to ensure high-speed data replication and processing. Second is the reliability of the backup server. The backup server needs to have high reliability and stability to ensure the security and integrity of the backup.

In short, MySQL hot backup is a database backup method that can be backed up and restored on the fly. By utilizing the principle of master-slave replication, it achieves real-time data replication and backup without affecting the running of applications. By using hot backup, data security and business continuity can be ensured, and system availability and reliability can be improved. .

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