Programmer Group

1, redis compilation and installation Download the installation package, unzip it and compile it Edit the script file of the built-in installer and comment the following [root@server1 redis-6.2.4]# cd utils/ [root@server1 utils]# vim install_server.sh [root@server1 utils]# ./install_server.sh xs ##Execute installation script Afte ...

SQL Server 2008 database structure System database master A database that records all system level information of the SQL Server systemmsdbTemplate database for all user databases and tempdb databasemodelUsed by SQL Server agent to schedule alerts and jobstempGlobal resources available to all users connected to the SQL Server instance, save a ...

Setting redis master-slave is mainly used to edit configuration files on different hosts We have three main engines ready server1, server2 and server3 respectively The master-slave automatic switching of redis is based on sentinel 1. The Sentinel system of Redis is used to manage multiple Redis servers (instance s). The system performs the ...

1. Introduction 1.1. What is Mybatis MyBatis is an excellent persistence layer frameworkIt supports custom SQL, stored procedures, and advanced mapping.MyBatis eliminates almost all JDBC code and the work of setting parameters and obtaining result setsMyBatis can configure and map primitive types, interfaces and Java POJO s (Plain Old Jav ...

When writing projects using SSM framework, sometimes the data obtained from the database is too large and will not be displayed in the web page. In order to avoid this situation, data paging can be used to effectively manage data. What's wrong? I hope you guys can correct me! 1. First look at the effect 2. To complete the paging function, it ...

Database foundation Database: a collection that stores, maintains, and manages dataDataBase Management System (DBMS) Common database management system Oracle Relational type MySQL Relational type DB2 Microsoft SQL Server Three paradigms First normal form (1NF): no duplicate columns;The second normal form (2NF): attributes are complete ...

1. Introduction to database Baidu's definition of database is: "database is" a warehouse for organizing, storing and managing data according to data structure ". It is a collection of large amounts of data stored in computers for a long time, organized, shareable and uniformly managed." In short, a database is a collec ...

Mybatis application 1 Introduction to Mybatis and coding process 2 mapper agent development method 3 global profile 4 input mapping and output mapping 5 Association query 6 delayed loading 7 dynamic SQL 8 Mybatis cache 1, What is Mybatis Mybatis reference website: http://www.mybatis.org/mybatis-3/zh/index.html Github source address: ht ...

Several common ways to install software on Linux: Source code compilationDecompress the compressed package (generally tar.gz)Compiled installation packages (RPM, DPKG, etc.)Online installation (YUM, APT, etc.) The convenience of the above methods increases in turn, but the versatility decreases in turn. For example, downloading compressed pac ...

SQL basics tutorial Statement: the content of this blog is sorted out from Datawhale's punch in learning, and sorted into notes according to the punch in content. For reprint, please contact Datawhale and my authorization, and the reprint source must be indicated. Chapter 3 more complex queries The first two punch in notes introduced th ...