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Express bird platform, query express information. Escaped pit Written in front Technology is updated and iterated, but there are always traces to follow. Endless wheel building has been exhausting. The pit that oneself jumps over, share final result, just for letting pain no longer repeat. One bac ...

Spring Learning Notes 1. Implementation of AOP based on aspect annotations Step 1, Create Bean s for Objects <!-- create object --> <bean id="book" class="com.itcast.aop.Book"></bean> <bean id="myBook" class="com.itcast.aop.MyBook"></bean> Step 2: Open AOP operations ...

Environment building 1. Import dependent Data source, database driver, spring JDBC module <!-- https://mvnrepository.com/artifact/mysql/mysql-connector-java --> <dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version> ...

I. MyCat Basic Concepts 1. What is MyCat A thoroughly open source, large database cluster for enterprise application developmentTransaction enabled, ACID enabled, enhanced database that can replace MySQLAn enterprise database that can be considered a MySQL cluster to replace the expensive Oracle clusterA new type of SQL Server which combines ...

MySQL highly available KeepAlived dual hosts In the production environment, one MySQL host has a single point of failure, so we need to ensure the high availability of MySQL, that is, two MySQL servers. If one of the MySQL servers hangs up, the other can take over immediately.MySQL's high availability schemes are generally as follows: keepali ...

I. Druid Druid is the best database connection pool in the Java language, and also the open source project of Alibaba. Druid is a database connection pool developed by Alibaba called monitoring. In terms of function, performance and scalability, Druid is superior to other database connection pools, including DBCP, C3P0, BoneCP, ...

1, Introduction of database and related concepts Database: warehouse for storing data; 1.DB(DateBase) data base A collection of data organized according to a data model and placed in storage 2.DBMS(DateBase Management System) Database management system Service software for manipulating and managing da ...

A strange place of mysql8.0 under docker I found a strange phenomenon when I installed mysql (last version) with docker in the morning If there is Let's talk about the pit first The newly installed mysql does not allow remote connection. This problem is easy to solve. Once you search online, the ...

Shiro 1. Introduction Apache Shiro is a Java security (permissions) framework. Shiro can easily develop applications that are good enough not only for JavaSE environments, but also for JavaEE environments. Shiro can complete authentication, authorization, encryption, session management, Web integration, caching, and more. Download address: ht ...

Getting started with mysql 01 What is a database? Classification of database The construction of mysql database mysql introduction Installation software Initialization View initial password Login with initial password & & modify initial password Modify password policy Related parameters ...