flush tables

The following articles mainly introduce the detailed content parsing of locking in the MySQL database table, including internal locking and External Locking. If you are interested in the actual operation content, you can browse the following

　　INSERT query speed: The time for inserting a record is composed of the following: Connection: (3) Send query to server: (2) Analysis query: (2) Insert record: (1 x record size) Insert index: (1 x index) Close: (1) The number here is a bit

INSERT query speed: the time when a record is inserted is composed of the following: (3) Send a query to the server: (2) analyze the query: (2) INSERT a record: (1x record size) insert index: (1x index) Disabled: (1) the number here is a bit

Table locking methods prevent client requests from interfering with each other or mutual interference between servers and maintenance programs. If you close the database, you can ensure that there is no interaction between the server and myisamchk

MySQL 5.6 master-slave replication Part 4 [some ignored Operation Details] 1. STOP SLAVE There are two types of threads responsible for synchronization from the server:1) IO thread2) SQL thread IO thread is responsible for obtaining binary logs on

MySQL improves Insert Performance The time required to insert a record is composed of the following factors, and the number indicates the approximate proportion:• Connection: (3)• Send a query to the server: (2)• Analysis query: (2)• Insert record: (

Mysql Chinese garbled solution ideas and processes bitsCN.com Mysql Chinese garbled text is a common problem, and it is not difficult to solve it. This article will be guided by how to find and solve the problem when I encounter it, to present the

Five tips for parsing and optimizing the MySQL insertion method bitsCN.com About 0.2 million of data insertion operations were encountered during work. after the program was compiled, it was found that the operation timed out. The maximum PHP

Step-by-step explanation of MySQL database performance adjustment MySQL performance adjustment: Insert query speed: The time for inserting a record is composed of the following: Connection: (3) Send query to server: (2) Analysis query: (2) Insert

Nagios monitoring MySQL error: NRPE: Unabletoreadoutput detailed solution process Nagios On the nagios page, the following error message is displayed: Warning: NRPE: Unable to read output 1. go to the nagios monitoring server and check 1.1.

On the nagios page, the following error is displayed: Warning: NRPE: Unabletoreadoutput1. Go to the nagios monitoring server and check 1.1. On the nagios page, the following error is displayed: Warning: NRPE: Unable to read output1. Go to the nagios

MySQL master-slave synchronization settings and synchronization error handling Note: 1. The database versions of the two servers should be the same. If they are different, the slave server version should be higher than the master server version. 2.

Mysql 6.4 Setting Sync The following describes how to quickly set up a MySQL synchronization server. Suppose you intend to synchronize all the databases and have not been set before. The master server needs to be shut down to complete all the

Ways to lock tables There are many ways to prevent client requests from interfering with each other or the server and maintenance programs interfering with each other. If you close the database, you can ensure that there is no interaction between

Mysqldump Backup principleThe basic process for backup is as follows: FLUSH TABLES功能：关闭实例上所有打开表目的：为第二步prepare，为了避免较长的事务操作造成FLUSH TABLES WITH READ LOCK操作迟迟得不到锁，但同时又阻塞了其它客户端操作 FLUSH TABLES with READ LOCK功能：加全局读锁目的：获得DB一致性状态 SET

In the MySQL database, both the read-only state and the Master-slave settings and relationships are involved in data migration and read-only state settings from the library. after practical testing, for MySQL single-instance database and master

MySQL master-slave Replication Principle IntroductionFirst, the principle of replicationMySQL replication tracks all changes to the database (updates, deletions, and so on) based on the primary server in the binary log. Each slave server receives a

MySQL's database has the following high-availability architectures: Clustering, read-write separation, and master preparation. And two of the following are done by copying. The following is a brief introduction to the principles and configuration of

In the MySQL database, both the read-only state and the Master-slave settings and relationships are involved in data migration and read-only state settings from the library.After practical testing, for MySQL single-instance database and master

1.Any execution that is longer than the wait_timeout or Interactive_timeout option is worth backing up, causing the session to be closed, which also implicitly executes the unlock tables command.2.A common drawback to the backup strategy using flush