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Recently, I encountered some production problems involving hystrix. I want to understand the underlying principle. Hystrix makes a lot of use of Rxjava's responsive programming. It's a little hard to understand because you don't understand Rxjava. Basic preparation <?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.a ...

sentinel documents summarized in the internship Official documents: https://sentinelguard.io/zh-cn/docs/dashboard.html 1. Characteristics Sentinel vs. Hystrix SentinelHystrixIsolation strategyBased on ConcurrencyThread pool isolation / semaphore isolationFuse degradation strategyBased on response time or failure rateBased on failure ratioRe ...

Procedure requirements: 1. Randomly generate maze map The maze map needs to be randomly generated in the game and Java util. Random class uses the random number generation method provided by random class to randomly generate obstacles, paths or rewards. Maze map is represented and stored by two-dimensional array. 2. Judge whether the player ...

Test case 1 Tangent point @Component public class UserServiceImpl implements UserService { @Override public void save(UserInfo userInfo) { System.out.println("Execute save:"+userInfo.getName()); } } Test case 2 section @Aspect @Component public class TestAspect { @Pointcut("execution(* com.helloworld.service.i ...

1, Foreword In the last article Research on distributed transaction principle of Seata AT mode In this paper, we will use spring cloud and spring cloud Alibaba to integrate Seata to realize distributed transaction control, and use Nacos as the registration center to register Seata into Nacos. 2, Environmental preparation This article mainly ...

Recently, the project has entered the joint commissioning stage. The interface of the service layer needs to interact with the protocol layer. The protocol layer needs to assemble the input parameter [json string] into the json string required by the service layer. It is easy to make mistakes in the assembly process. The interface debugging ...

1. Integration of spring and Web Environment 1.1 ApplicationContext application context acquisition method The application context object is obtained through the new ClasspathXmlApplicationContext(spring configuration file), but each time a Bean is obtained from the container, the new ClasspathXmlApplicationContext(spring configuration file) ...

Customize parameter validators in Spring Boot After we introduce the starter dependency of spring boot starter validation in the project, we can directly use annotations such as @ NotNull and @ Length on the request method of the Controller for parameter verification. The bottom layer of the starter uses the verifier provided by hibernate vali ...

1. Overview of rule engine 1.1 what is a rule engine The full name of rule engine is business rule management system, and its English name is BRMS (Business Rule Management System). The main idea of rule engine is to separate the business decision-making part of the application, and write business decisions (business rules) using predefined s ...

1, @ Component, @ repository, @ Service, @ Controller (1) @ Component put the ordinary java class creation object into the Spring container Equivalent to < bean id = "" class = "" > in xml configuration file</ bean> For example: public class Cat { private String name; private Integer age; public ...