performance mysql

Definition of extensibility : a cost-effective equivalent boost when resources are added to get more work done.scale up (vertical scaling): Improves the server's hardware performance.scale-out (horizontal scaling): Typically replication, splitting,

In the MySQL execution plan:IDID used to indicate the order of execution, ID the same as a group, first execute ID A large number of groups, and then a small group of numbers are executed. within a group with the same ID, the order is executed

MySQL high-availability Cluster Scenario summaryOne, a common high-availability MySQL solutionHigh-availability solutions: 1, data sharing or data synchronization, data sharing can be achieved through the San (Storage area Network), data

4.1 Selecting the Optimized data type general principlessmaller is usually betterThe premise is to ensure that you do not underestimate the range of values that you need to store: because it consumes less disk, memory, CPU cache, and requires less

Slow queryWhen a resource becomes inefficient, it should be understood why. Like the following possible causes:1. Resources are overused and the margin is insufficient to work properly.2. Resources are not properly configured3. Resources are damaged

The Ysql database assigns a thread to each client connection, so the connection is invaluable. Develop an asynchronous MySQL proxy server, the PHP application server can be long connected to this server, both to reduce the connection pressure of

Introduction to MySQL performance optimizationWhat is performance optimization? In fact, we tend to define from a broad sense that the non-functional optimizations of a MySQL system will be considered performance optimizations, such as the stability

A cornerstone of good logic design and high performance for physics designersFirst, select the optimized data typeSmaller is usually betterConsumes less CPU cycles required for disk, memory, CPU caching, and processingIt's simple.Operations require

1.AUTOCOMMITMySQL uses default autocommit and can be viewed and modified by the following commands:mysql> SHOW VARIABLES like ' autocommit ';+---------------+-------+| variable_name | Value |+---------------+-------+| autocommit | On |+--------------

The high-performance MySQL book has been downloaded from the computer for almost half a year and has no time to read it. In the end, I decided to spend some time reading this book every day in March. Here I will record some knowledge points in this

Does MySql Delete and update operations affect performance? mysql Delete and update Performance The cost of Delete and update operations is usually higher than that of insert operations. Therefore, a good design requires less database update and

Highbrow cemysql is a classic book. from the application layer to the database to the hardware platform, all the tuning techniques and common problems are mentioned. Various concepts and skills of the database are frequently used, such as indexing,

This is a creation in Article, where the information may have evolved or changed. Kingshard is a high-performance MySQL proxy project developed by Go, Kingshard is dedicated to simplifying MySQL sub-Library table operations in satisfying basic

Develop an asynchronous High-Performance MySQL proxy server based on Swoole extension MySQL database allocates a thread for each client connection, so the connection is very valuable. Develop an asynchronous MySQL proxy Server. The PHP application

This article mainly introduces the basic use of join statements in MySQL and the impact of fields on performance. It provides an example to observe the performance differences caused by the encoding of different field character sets used by join,

High-performance MySQL Reading Notes-Multi-version Concurrency Control Algorithm1. AUTOCOMMITMysql is automatically submitted by default. You can run the following command to view and modify it:Mysql> show variables like 'autocommit ';+ -------------

1. Slow QueryWhen a resource becomes inefficient, it should be understood why. Like the following possible causes:1. Resources are overused and the margin is insufficient to work properly.2. Resources are not properly configured3. Resources are

In database design, if the query is written badly, even if the library table structure design is reasonable, the index can not achieve high performance.1. Optimize data accessThe most basic reason for poor query performance is that there is too much

I. Build a high-availability cluster system with MySQL dual master mode via keepalived1.MySQL Replication Introduction:MySQL replication is a master-slave replication feature provided by MySQL itself, which is a process by which a MySQL server

An index is a data structure that the storage engine uses to quickly find records. Index optimization is the most effective means of optimizing query performance.1. Type of indexIn MySQL, indexes are implemented at the storage engine layer rather