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Feign declarative remote call 1. Introduction Feign is a declarative HTTP client. Its purpose is to make remote calls easier. Feign provides the template of HTTP request. By writing a simple interface and inserting annotations, you can define the parameters, format, address and other information of HTTP request. Feign integrates Ribbon (l ...

preface   when developing high concurrency systems, there are three sharp tools to protect the system: caching, degradation and current limiting. Current limiting can be considered as a kind of service degradation. Current limiting protects the system by limiting the requested traffic.    generally speaking, the throughput of ...

Previous chapter Day 6 of SpringBoot self-study - anyone who dies and climbs the template home's member paid boutique website template preface Some problems in the video were barely solved, but the progress was only six videos. The @ Slf4j annotation in lombok is quite useful. It is recommended to use it. Raytheon's web page (the ...

1, Basic introduction 1. What is a Disruptor? (1) Disruptor is a high-performance concurrency framework developed by UK foreign exchange trading company LMAX. It can be considered as an efficient and low latency memory message component for inter thread communication. Its biggest feature is high performance. Unlike Kafka and RabbitMQ, which a ...

preface When we develop the project, we need close cooperation between the front and rear ends to ensure the stability and efficiency of the project. The front end passes the request parameters to the back end through the URL interface, and the back end returns the corresponding response information according to these different request paramet ...

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 ...

One of the issues to be discussed in this article is how to set up different database data sources for Spring and Mybatis? be careful. Under normal circumstances, you must set the same database data source for Spring and Mybatis Case code location https://github.com/infuq/spring-framework/tree/main/infuq-t/src/main/java/com/infuq/mybatis Cas ...

1, springboot exception handling 1. The default exception handling mechanism of springboot By default, SpringBoot provides two different ways to respond One is that when the browser client requests a nonexistent page or server exception, SpringBoot will respond to an html by default The other is to return json information by default when ...

How to ensure that messages are not lost 1. Message loss caused by network abnormality Do a good job in fault tolerance (try - catch) of the method. Sending messages may fail due to network reasons. After the failure, it will be recorded in the database.Keep a log, and the status of each message sent should be recorded.-- Message record table ...