This article is the continuation of the first cache optimization article in the MySQL optimization series. It introduces all aspects of cache optimization in more detail. I hope you will like MySQL. There are caches everywhere inside. I will come back when I read the source code of MySQL. Detailed analysis of how cache is used. This part mainly covers various explicit cache optimizations: query cache optimization result set cache sorting cache join connection cache table cache Cache and table structure definition cache Cache table scan cache buffer MyISAM index cache buffer log cache read-ahead mechanism delayed table and temporary table 1 , Query cache optimization The query cache not only caches the query statement structure, but also caches the query results. Within a period of time, if it is the same SQL, the results will be read directly from the cache to improve the efficiency of data search. But when the data in the cache is inconsistent with the data in the hard disk, the cache will become invalid. mysql> show variables like '%query_cache%'; +----------------
1. How to use cache optimization? Summarize the usage of cache optimization examples
## Introduction: This article is the first article in the MySQL optimization series about cache optimization In this sequel, I will introduce all aspects of cache optimization in more detail. I hope you will like the fact that MySQL has caches everywhere. When you read the source code of MySQL, we will analyze in detail how the cache is used. This part mainly covers various explicit cache optimizations: query cache optimization result set cache sorting cache join connection cache table cache Cache and table structure definition cache Cache table scan cache buffer MyISAM index cache buffer log cache read-ahead mechanism delay...
2. 10 recommended articles about Mysql database programming
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Detailed tutorial on how to insert records
## Introduction: Inserting, browsing, modifying and deleting records in the data table can be completed using sql statements in the MySQL command line. Here is how to execute basic SQL statements in the MySQL command line 1. Insert records. When creating an empty database and data table, the first thing to consider is how to add data to the data table. This operation can be completed using the insert statement. The syntax format is as follows: insert into data table name (column_name, column_name2,... )value(value1,value...
4.
Usage summary of partition types
Introduction: I have only implemented the following four database partitions: RANGE (range) partition, and there are three more that I will try to implement in the future. Friends who have implemented it can share what they think is good writing. Related articles Four partition types of MySQL tables 1. What is table partitioning? In layman's terms, table partitioning is dividing a large table into several small tables according to conditions. For example, mysql5.1 starts to support data table partitioning. If there are more than 6 million records, then the table can be partitioned according to the storage date or the location. Of course, it can also be partitioned according to other conditions. 2. Why...
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Detailed introduction about mysql5.6.21Introduction: This article mainly introduces the detailed steps of installation and configuration of mysql5.6.21, which has certain reference value. Interested friends can refer to 1. Overview of MySQL version: 5.6.21 client Tool: Navicat for MySQL 2. MySQL installation 1. The file name of MySQL after downloading is: mysql_installer_community_V5.6.21.1_setup.1418020972.msi. The diagram is as follows: 2. After double-clicking, the following window will pop up: (If the system... 6. Recommended 7 articles about query constructors Introduction: Recently, the editor is studying what is known as the best framework in the world - Laravel. In fact, the learning framework is the idea of learning framework! I want to record some of my experiences in laravel learning in my blog. You are welcome to follow my other Github. Blog and short book, communicate with each other! Version: Laravel 5.2 Database: mysql 5.7 PHP: php7.1 Database operation and query constructor There are two ways to perform database operations in Laravel, one is to use the \DB appearance object of... 7. Recommend 10 introductory tutorials about Java classes ## Introduction: This article describes the comparison table between Java data types and MySql data types. It is shared with everyone for your reference. The details are as follows: Type name display length Database type JAVA type JDBC type index (int) VARCHARL +NVARCHARjava.lang.String12CHARNCHARjava.lang.String1BLOBL+NBLOBjava.lang.byte[]-4TEXT65535VARCHARjava.lang.String-1I... 8. About .BYTE 10 recommended articles 9. Recommended 5 articles about .BYTE[] 10. Recommended 4 articles about installation-free configuration [Related Q&A recommendations]: java - Spring-data-jpa The information just saved cannot be found mysql - in PHPMyadmin After messing around with it here comes up - #2002 - - The server is not responding (or the local server's socket is not set up correctly). Database - Questions about installing MySQL? 
##Introduction: This article gives you a detailed introduction to the installation-free configuration tutorial of MySql 5.7.17. First, you need to download the installation package of mysql 5.7.17, and then unzip it. You can go through the specific configuration process. Let’s study together with this article 1. Download the mysql-5.7.17-winx64.zip installation package 2. Unzip the installation package. D:\DevelopTool\mysql-5.7.17-winx64 #Decompression directory 3. Create a folder named data in the decompression directory to store data...
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What are stored procedures in MySQL?May 01, 2025 am 12:27 AMStored procedures are precompiled SQL statements in MySQL for improving performance and simplifying complex operations. 1. Improve performance: After the first compilation, subsequent calls do not need to be recompiled. 2. Improve security: Restrict data table access through permission control. 3. Simplify complex operations: combine multiple SQL statements to simplify application layer logic.
How does query caching work in MySQL?May 01, 2025 am 12:26 AMThe working principle of MySQL query cache is to store the results of SELECT query, and when the same query is executed again, the cached results are directly returned. 1) Query cache improves database reading performance and finds cached results through hash values. 2) Simple configuration, set query_cache_type and query_cache_size in MySQL configuration file. 3) Use the SQL_NO_CACHE keyword to disable the cache of specific queries. 4) In high-frequency update environments, query cache may cause performance bottlenecks and needs to be optimized for use through monitoring and adjustment of parameters.
What are the advantages of using MySQL over other relational databases?May 01, 2025 am 12:18 AMThe reasons why MySQL is widely used in various projects include: 1. High performance and scalability, supporting multiple storage engines; 2. Easy to use and maintain, simple configuration and rich tools; 3. Rich ecosystem, attracting a large number of community and third-party tool support; 4. Cross-platform support, suitable for multiple operating systems.
How do you handle database upgrades in MySQL?Apr 30, 2025 am 12:28 AMThe steps for upgrading MySQL database include: 1. Backup the database, 2. Stop the current MySQL service, 3. Install the new version of MySQL, 4. Start the new version of MySQL service, 5. Recover the database. Compatibility issues are required during the upgrade process, and advanced tools such as PerconaToolkit can be used for testing and optimization.
What are the different backup strategies you can use for MySQL?Apr 30, 2025 am 12:28 AMMySQL backup policies include logical backup, physical backup, incremental backup, replication-based backup, and cloud backup. 1. Logical backup uses mysqldump to export database structure and data, which is suitable for small databases and version migrations. 2. Physical backups are fast and comprehensive by copying data files, but require database consistency. 3. Incremental backup uses binary logging to record changes, which is suitable for large databases. 4. Replication-based backup reduces the impact on the production system by backing up from the server. 5. Cloud backups such as AmazonRDS provide automation solutions, but costs and control need to be considered. When selecting a policy, database size, downtime tolerance, recovery time, and recovery point goals should be considered.
What is MySQL clustering?Apr 30, 2025 am 12:28 AMMySQLclusteringenhancesdatabaserobustnessandscalabilitybydistributingdataacrossmultiplenodes.ItusestheNDBenginefordatareplicationandfaulttolerance,ensuringhighavailability.Setupinvolvesconfiguringmanagement,data,andSQLnodes,withcarefulmonitoringandpe
How do you optimize database schema design for performance in MySQL?Apr 30, 2025 am 12:27 AMOptimizing database schema design in MySQL can improve performance through the following steps: 1. Index optimization: Create indexes on common query columns, balancing the overhead of query and inserting updates. 2. Table structure optimization: Reduce data redundancy through normalization or anti-normalization and improve access efficiency. 3. Data type selection: Use appropriate data types, such as INT instead of VARCHAR, to reduce storage space. 4. Partitioning and sub-table: For large data volumes, use partitioning and sub-table to disperse data to improve query and maintenance efficiency.
How can you optimize MySQL performance?Apr 30, 2025 am 12:26 AMTooptimizeMySQLperformance,followthesesteps:1)Implementproperindexingtospeedupqueries,2)UseEXPLAINtoanalyzeandoptimizequeryperformance,3)Adjustserverconfigurationsettingslikeinnodb_buffer_pool_sizeandmax_connections,4)Usepartitioningforlargetablestoi
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