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MyCAT is MySQL middleware, formerly known as Alibaba's famous Cobar. After Cobar was open sourced for a period of time, it fell into disuse. So MyCAT took up this banner, and in the era of big data, its importance has become increasingly apparent. This article is mainly about the introductory deployment of MyCAT. 1. What is mycat? A completely open source, large database cluster for enterprise application development that supports transactions, ACID, and an enhanced version of the database that can replace MySQL. An enterprise-level database that can be regarded as a MySQL cluster, used to replace the expensive Oracle cluster. A fusion In-memory cache technology, NoSQL technology, HDFS big data's new SQL Server, a new generation of enterprise-level database products that combine traditional databases and new distributed data warehouses, and a novel database middleware product. The above is the official description. In fact, it is the connection pool of the database. Mysql proxy is also a connection pool, but its efficiency is very low. 2. Mycat installation 1, download address mycat2, install mycat# tar zxvf Mycat-server-1.6-RELEA

1. Detailed explanation on the installation and use of mycat middleware for mysql

10 recommended articles about installation and use

Introduction: MyCAT is MySQL middleware, formerly known as Alibaba’s famous Cobar. After Cobar was open sourced for a period of time, it could no longer be used Let it go. So MyCAT took up this banner, and in the era of big data, its importance has become increasingly apparent. This article is mainly about the introductory deployment of MyCAT.

2. Share your Cython installation and introduction experience

10 recommended articles about installation and use

##Introduction: It is a tool used to quickly generate Python extension modules (extension modules). Its syntax is a mixture of python language syntax and c language syntax. It is easier to write python extension modules than swig. Maybe you will say swig. You can directly pass the c header file

3. Installation and use of Python

10 recommended articles about installation and use

Introduction: Installation and use of Python

4. Detailed introduction to the installation and use of php UEditor Baidu editor sharing

10 recommended articles about installation and use

## Introduction: This article mainly introduces the installation and usage of UEditor Baidu editor. Friends who need it can refer to it.

5.

Detailed introduction to the installation and use of NodeJs testing framework Mocha

10 recommended articles about installation and use

Introduction: This article comprehensively introduces how to use Mocha, allowing you to get started easily. If you know nothing about testing before, this article can also be used as an introduction to JavaScript unit testing.

6.

Detailed explanation of the installation and use of python virtual environment virualenv

10 recommended articles about installation and use

Introduction: Preface After installing python, pip, setuptools and other tools, you can create a virualenv virtual environment. This tool is similar to a virtual machine and can run multiple different versions on the same computer. Python programs do not affect each other. You can exit or delete them when not in use. It is a good development tool. 1. Install virtualenv#install pip on macbrew install pythoncurl https

7.

Detailed introduction to the installation and use tutorial of mysql5.7.17 (picture and text)

10 recommended articles about installation and use

Introduction: This article mainly introduces the graphic tutorial on the installation and use of MySql in detail. It has certain reference value. Interested readers Friends, you can refer to

8. Detailed explanation of how to install and use redis in python

10 recommended articles about installation and use

##Introduction : This article mainly introduces the method of installing and using redis in Python, analyzes the specific steps of installation and configuration, and analyzes the specific usage skills of the redis database in detail with examples. Friends in need can refer to the following

9. MySql installation and use graphic tutorial

10 recommended articles about installation and use

##Introduction: MySQL It is a relational database management system developed by the Swedish MySQL AB company and currently belongs to Oracle. MySQL is a relational database management system. A relational database stores data in different tables instead of putting all data in one large warehouse, which increases speed and flexibility. The SQL language used by MySQL is the most commonly used standardized language for accessing databases. MySQL software adopts a dual authorization policy (this entry "Authorization Policy"), which is divided into community version and commercial version. Due to its small size, fast speed and low total cost of ownership, especially the characteristics of open source, it is generally used by small and medium-sized enterprises. For website development, MySQL is chosen as the website database. Because of its community

10.

Python character encoding judgment method

10 recommended articles about installation and use ##Introduction: This article mainly introduces the Python character encoding judgment method, analyzes the Python character encoding judgment skills in the form of examples, and gives the installation and use methods of chardet. Friends in need can refer to it

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What are some tools you can use to monitor MySQL performance?What are some tools you can use to monitor MySQL performance?Apr 23, 2025 am 12:21 AM

How to effectively monitor MySQL performance? Use tools such as mysqladmin, SHOWGLOBALSTATUS, PerconaMonitoring and Management (PMM), and MySQL EnterpriseMonitor. 1. Use mysqladmin to view the number of connections. 2. Use SHOWGLOBALSTATUS to view the query number. 3.PMM provides detailed performance data and graphical interface. 4.MySQLEnterpriseMonitor provides rich monitoring functions and alarm mechanisms.

How does MySQL differ from SQL Server?How does MySQL differ from SQL Server?Apr 23, 2025 am 12:20 AM

The difference between MySQL and SQLServer is: 1) MySQL is open source and suitable for web and embedded systems, 2) SQLServer is a commercial product of Microsoft and is suitable for enterprise-level applications. There are significant differences between the two in storage engine, performance optimization and application scenarios. When choosing, you need to consider project size and future scalability.

In what scenarios might you choose SQL Server over MySQL?In what scenarios might you choose SQL Server over MySQL?Apr 23, 2025 am 12:20 AM

In enterprise-level application scenarios that require high availability, advanced security and good integration, SQLServer should be chosen instead of MySQL. 1) SQLServer provides enterprise-level features such as high availability and advanced security. 2) It is closely integrated with Microsoft ecosystems such as VisualStudio and PowerBI. 3) SQLServer performs excellent in performance optimization and supports memory-optimized tables and column storage indexes.

How does MySQL handle character sets and collations?How does MySQL handle character sets and collations?Apr 23, 2025 am 12:19 AM

MySQLmanagescharactersetsandcollationsbyusingUTF-8asthedefault,allowingconfigurationatdatabase,table,andcolumnlevels,andrequiringcarefulalignmenttoavoidmismatches.1)Setdefaultcharactersetandcollationforadatabase.2)Configurecharactersetandcollationfor

What are triggers in MySQL?What are triggers in MySQL?Apr 23, 2025 am 12:11 AM

A MySQL trigger is an automatically executed stored procedure associated with a table that is used to perform a series of operations when a specific data operation is performed. 1) Trigger definition and function: used for data verification, logging, etc. 2) Working principle: It is divided into BEFORE and AFTER, and supports row-level triggering. 3) Example of use: Can be used to record salary changes or update inventory. 4) Debugging skills: Use SHOWTRIGGERS and SHOWCREATETRIGGER commands. 5) Performance optimization: Avoid complex operations, use indexes, and manage transactions.

How do you create and manage user accounts in MySQL?How do you create and manage user accounts in MySQL?Apr 22, 2025 pm 06:05 PM

The steps to create and manage user accounts in MySQL are as follows: 1. Create a user: Use CREATEUSER'newuser'@'localhost'IDENTIFIEDBY'password'; 2. Assign permissions: Use GRANTSELECT, INSERT, UPDATEONmydatabase.TO'newuser'@'localhost'; 3. Fix permission error: Use REVOKEALLPRIVILEGESONmydatabase.FROM'newuser'@'localhost'; then reassign permissions; 4. Optimization permissions: Use SHOWGRA

How does MySQL differ from Oracle?How does MySQL differ from Oracle?Apr 22, 2025 pm 05:57 PM

MySQL is suitable for rapid development and small and medium-sized applications, while Oracle is suitable for large enterprises and high availability needs. 1) MySQL is open source and easy to use, suitable for web applications and small and medium-sized enterprises. 2) Oracle is powerful and suitable for large enterprises and government agencies. 3) MySQL supports a variety of storage engines, and Oracle provides rich enterprise-level functions.

What are the disadvantages of using MySQL compared to other relational databases?What are the disadvantages of using MySQL compared to other relational databases?Apr 22, 2025 pm 05:49 PM

The disadvantages of MySQL compared to other relational databases include: 1. Performance issues: You may encounter bottlenecks when processing large-scale data, and PostgreSQL performs better in complex queries and big data processing. 2. Scalability: The horizontal scaling ability is not as good as Google Spanner and Amazon Aurora. 3. Functional limitations: Not as good as PostgreSQL and Oracle in advanced functions, some functions require more custom code and maintenance.

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