Comparison of data backup and recovery strategies between TiDB and MySQL

Comparison of data backup and recovery strategies between TiDB and MySQL

Introduction:
In the Internet era, data has become one of the most important assets of an enterprise, so data backup and recovery strategies are particularly important. As commonly used relational database management systems, TiDB and MySQL have the characteristics of high performance and reliability, but there are still differences in data backup and recovery. This article will compare the data backup and recovery strategies of TiDB and MySQL, and provide relevant code examples for analysis.

1. Comparison of data backup strategies

1. TiDB’s data backup strategy
   TiDB is a distributed database system. Its core architecture is TiKV and PD. Through distributed Transactions and Raft protocols to ensure data consistency and reliability. In terms of data backup, TiDB provides two backup methods: physical backup and logical backup.

Physical backup refers to directly copying the data on the disk to another storage device. This backup method is highly efficient and suitable for large-scale data backup. TiDB provides the command line tool tidb-lightning for physical backup. The sample code is as follows:

./tidb-lightning -D /path/to/data -T dbname.tablename

Logical backup refers to exporting data in logical form and then restoring it through logical import. This backup method is more flexible and suitable for small-scale data backup. TiDB provides the command line tool mysqldump for logical backup. The sample code is as follows:

mysqldump -h 127.0.0.1 -P 4000 -u root -p dbname > backup.sql

2. MySQL data backup strategy
   MySQL is a classic relational database management system, and the commonly used backup methods are There are physical backups and logical backups.

The physical backup method is the same as TiDB, that is, directly copying the data on the disk to another storage device. MySQL provides the command line tools mysqldump and mysqlpump for physical backup. The sample code is as follows:

mysqldump -h 127.0.0.1 -P 3306 -u root -p dbname > backup.sql

mysqlpump -h 127.0.0.1 -P 3306 -u root -p dbname --default-parallelism=4 --routines > backup.sql

The logical backup method is the same as TiDB, that is, exporting data in logical form and then restoring it through logical import. MySQL provides the command line tools mysqldump and mysqlimport for logical backup. The sample code is as follows:

mysqldump -h 127.0.0.1 -P 3306 -u root -p dbname > backup.sql

mysqlimport -h 127.0.0.1 -P 3306 -u root -p dbname < backup.sql

2. Comparison of data recovery strategies

1. TiDB’s data recovery strategy
   TiDB’s The data recovery strategy is similar to the data backup strategy, that is, physical recovery and logical recovery.

Physical recovery refers to restoring the physical copy of the backup directly to the original database server. The recovery speed is fast and suitable for large-scale data recovery. The sample code is as follows:

./tidb-lightning -D /path/to/backup

Logical recovery refers to importing the backed-up logical data to a new database server. The recovery speed is relatively slow and is suitable for small-scale data recovery. The sample code is as follows:

mysql -h 127.0.0.1 -P 4000 -u root -p dbname < backup.sql

2. MySQL's data recovery strategy
   MySQL's data recovery strategy is similar to the data backup strategy, that is, physical recovery and logical recovery.

The physical recovery method is the same as TiDB, that is, the backed-up physical copy is restored directly to the original database server. The sample code is as follows:

mysql -h 127.0.0.1 -P 3306 -u root -p dbname < backup.sql

The logical recovery method is the same as TiDB, that is, the backed up logical data is imported to the new database server. The sample code is as follows:

mysql -h 127.0.0.1 -P 3306 -u root -p dbname < backup.sql

Conclusion:
TiDB and MySQL have similarities in data backup and recovery strategies, and both support physical backup and logical backup. The difference is that TiDB is a distributed database system with stronger fault tolerance and scalability, while MySQL is a traditional relational database system. In specific use, select appropriate backup and recovery strategies based on data size and business needs to improve data security and reliability.

References:

1. TiDB official documentation: https://docs.pingcap.com/zh/tidb/stable
2. MySQL official documentation: https:/ /dev.mysql.com/doc/

The above is the detailed content of Comparison of data backup and recovery strategies between TiDB and MySQL. For more information, please follow other related articles on the PHP Chinese website!