mysql status sending data

Document category: Database Keyword: MySQL master slave Recently, due to project requirements, Mysql Data Synchronization has been set on Linux servers. Fortunately, there are a lot of network resources, and Google has all of them, but the actual

Select * From searchzh where modified_date> '2017-09-02 14:45:22 '; Performance of a MySQL query statement: sending data takes 10 minutes .... + -------------------------------- + ----------- +| Status | duration |+ -------------------------------- +

First, let's look at the basics of the SHOW INNODB STATUS output, which prints a lot of counters, statistics, transactional information about INNODB internal performance. In MySQL 5, the performance statistics of InnoDB are also shown in the show

In actual applications, when show processlist is used, most of my systems are sending data! That is, I have been wondering why so many sending data stays in my system. It is really not so slow to send query results to the client!The document

Recently help locate a MySQL query is very slow problem, positioning process synthesis of a variety of methods, theories, tools, very representative, to share with you. "Problem phenomenon" Using Sphinx to support inverted indexing, but Sphinx

Common script backup Automatically configure msmtp and use mail to send emails #! /Bin/bash SRC =/usr/local/src Cd $ SRC # Install msmtp client # If your want support TLS/SSL, install openssl-devel # Yum install-y openssl-devel //

MySQL Cluster Core ConceptsNDBCLUSTER(also known as NDB ) is an in-memory storage engine offering high-availability and data-persistence features.Ndbcluster (also known as NDB) is an in-memory storage engine that provides high availability and data

MySQL Read and write separation overviewAs the most widely used free database in the world, MySQL believes that all engineers engaged in system operations must have contacted. However, in the actual production environment, the single MySQL as a

1. What is read/write splitting?   One of the most powerful functions of MySQL Proxy is to implement Read/Write Splitting )". The basic principle is to allow the primary database to process transactional queries, but to process SELECT queries from

MySQL Error: (2006, ' MySQL server has gone away ') the problem is that the client and MySQL server link between the broken. The reason for this is that the SQL operation is typically too long, or that the data being transmitted is too large (for