The storage engines in MySQL play a vital role, they are responsible for the storage and retrieval of data. Among them, InnoDB is the default storage engine of MySQL. It provides transaction support and row-level locking and other functions, and is suitable for most application scenarios. This article will introduce how to configure and optimize the InnoDB storage engine in MySQL.
- Configure InnoDB storage engine
1.1. Confirm that the default storage engine is InnoDB.
In the MySQL configuration file (usually my.cnf or my.ini), find default-storage-enginethe parameter and make sure its value is "InnoDB". If this parameter is not set, add the following line:
default-storage-engine = InnoDB
1.2. Configure the InnoDB buffer pool size.
The InnoDB buffer pool is a memory area used to cache data and indexes. Its size has a great impact on performance. Adjust innodb_buffer_pool_sizethe parameter value based on the available memory of the server and the size of the database. Generally speaking, it is recommended to set it to 70-80% of available memory.
innodb_buffer_pool_size = 2G
1.3. Configure log file size
The InnoDB storage engine uses log files to record data changes to support transactions and crash recovery. Configure the size of the log file by adjusting innodb_log_file_sizethe value of the parameter. It is recommended to set it between 256M-1G.
innodb_log_file_size = 512M
1.4. Configure concurrency control
The InnoDB storage engine supports multiple concurrent connections and transactions. Configure concurrency control by adjusting the following parameters:
innodb_thread_concurrency = 0
innodb_read_io_th