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demo address: https://gitee.com/pdh_gitee/redis-cache-demo.git. Redis must be available locally, which is the premise. All demo s are tested on windows. In the spring boot project, you can usually use the automatic cache policy, or you can use the RedisTemplate class to operate redis, and redis can be configured (of course, this is trou ...

Problems encountered First, I encountered the following problems when I wrote a many to many demo with springboot JPA to insert data: detached entity passed to persist The general meaning is that when inserting the data, the existing data in the cascade table is used. The id of the data already exists and cannot be inserted. Therefore: de ...

catalogue Spring nested transaction rollback Problem description Project background: Problem recurrence 1. Declaration transaction of spring 2. Event processing logic of transaction 3. Actual business Service layer method 4.Druid data source configuration 5. Test execution Log analysis Analyze the cause of the problem summary Trans ...

1, Concept of AOP ⭐ What is AOP Aspect oriented programming (aspect oriented), AOP can isolate each part of business logic, reduce the coupling between each part of business logic, improve the reusability of program, and improve the efficiency of development.That is, add new functions to the main functions without modifying the source ...

Popular description of aop terms Joinpoint connection point: the line of program that calls the pointcut function is. Target target object: the object of the function body that needs supplementary functions. Pointcut tangent: the method name of the (Target) in the target object. Advice enhancement method: adding a program to the tangent po ...

@TOC #Spring collection Record every step of the program___ auth:huf OOP stands for object-oriented programming, which is a programming idea. AOP stands for aspect oriented programming, which is also a programming idea. There is a saying in the Spring official website; Let us begin by defining some central AOP concepts and terminology. Thes ...

1. Key concepts in AOP   Join point: a specific point in the process of program execution, such as method call or exception throw Target: the object to be notified (represented) Note 1: complete the specific business logic Advice: an action performed on a specific connection point. At the same time, advice is also a specific implem ...

summary Configuration file problems faced by distributed systems Microservice means to split the business in a single application into one sub service. The granularity of each service is relatively small, so there will be a large number of services in the system. Since each service needs the necessary configuration information to run, a s ...

  1, What is JWT? Why use JWT? Json web token (JWT) is a JSON based open standard (RFC 7519) implemented to transfer declarations between network application environments The token is designed to be compact and secure, especially suitable for single sign on (SSO) scenarios of distributed sites. The declaration of JWT is generally used ...

Spring Boot multi module project 1. Create a maven project Project Name: spring boot sample project Delete the redundant files and leave only the pom.xml file in the spring boot sample project project 2. Add sub modules in spring boot sample project project New: spring boot sample API module. Pay attention to the packa ...