MySQL high availability solution - dual primary

There are many high availability schemes for MySQL, such as dual master, MHA, MMM, etc. here is just the simplest dual master high availability scheme. 1, Configure MySQL as master-slave 1. Environmental preparation system IP host name service Centos 7.5 192.168.20.2 mysql01 MySQL+keepalived Centos 7.5 192.168.20.3 mysql02 MySQL+keepali ...

Added by nysmenu on Wed, 05 Feb 2020 12:33:15 +0200

SpringBoot+thymeleaf+layui+mybatis realize paging with the help of pagehelper plug-in

This paper records the implementation of simple paging function. Relevant environment: Spring boot framework; Template engine: thymeleaf; Front end framework: layui; Framework of persistence layer: mybatis; Paging plug-in: pagehelper; Write some nonsense. (please skip it if you are eager to realize th ...

Added by AIS4U on Wed, 05 Feb 2020 08:47:45 +0200

MyBatis Quick Start Add Delete Check

MyBatis Getting Started to CURD As a happy little farmer, we often repeat different versions at every stage, student management, user management, registered logins, from the console version of JavaSE, or GUI version, to the JSP version of JavaWeb, to the version that just uses HTML as a front-end presentation, and to a newer technology where w ...

Added by elindithas on Wed, 05 Feb 2020 05:35:58 +0200

Introduction to programmatic transaction usage postures for SpringBoot series tutorials

Introduction to programmatic transaction usage postures for SpringBoot series tutorials The blog posts on the aforementioned transactions mainly make use of the declarative posture of the @Transactional annotation, which has the advantages of simple use, low intrusiveness and high identifiability (you know you are using the transaction at a ...

Added by Syphon on Wed, 05 Feb 2020 03:57:57 +0200

SOCKET writes communication between client and server, connects Mysql database, and java realizes dynamic monitoring

See the detailed course design report and the source code of C and java Code cloud: https://gitee.com/xyy9/socket github: https://github.com/XYYhub/socket Build database skip C ා connect to database Need to add MySql.Data.dll reference connection database Code page adding using mysql.data.mysql clien ...

Added by pratheshshah on Mon, 03 Feb 2020 16:01:18 +0200

Ansible Installation and Module Management

Introduction to Ansible Ansible can manage both Linux for Redhat s, Linux for Debian, and Windows hosts.The management node only connects to the remote host while executing the script, and there is no special synchronization mechanism, so exceptions such as power outages generally do not affect ansbile. Ansible is a new automated operation ...

Added by dizzy1 on Sun, 02 Feb 2020 20:37:07 +0200

Android references external database (1)

Android references external database (1) There is a ready-made database, which needs to be directly introduced into the project. Prepare for preparation Before we start, we need to confirm the table structure and field information of the existing database. (pay attention to the size of the database, which is useful lat ...

Added by pr0x on Fri, 31 Jan 2020 20:59:26 +0200

python web development - getting started with Django

Opening chapter Through the previous article python entry practice - student management system I practiced a bunch of python syntax. This article summarizes the introduction of Django as a web framework. The premise is to have relevant web development experience (Java, php, etc.). Because this article will not involve the concept of http protoc ...

Added by neex1233 on Fri, 31 Jan 2020 13:03:59 +0200

Java Web knowledge point database MYSQL&DDL&DML&DQL&DCL

data base Basic concepts of database English words of DataBase: DataBase abbreviation: DB What is a database? Warehouse for storing and managing data Characteristics of database 1. Persistent data storage, in fact, the database is a file system 2. Easy to store, manage and operate data 3. A unified ...

Added by the_lynx123 on Thu, 30 Jan 2020 15:33:16 +0200

Java web simple registration and landing project case

core technology java web servlet: HttpServlet class, configuration of Servlet class based on @WebServlet() comment tomcat project deployment mysql database jdbc druid database connection pool html Software used java web integrated development environment: IntelliJ IDEA Server: tomcat Visualizatio ...

Added by tolli on Tue, 28 Jan 2020 04:11:37 +0200