Programmer Think

RocketMQ, as an excellent middleware, has a wide range of applications. There are large-scale applications in different fields such as finance, e-commerce, telecommunications, medical, social science, security and so on. There is no doubt that the security is very questionable, because there is no security-related business module in RocketMQ, a ...

Public number: java paradise The first edition of RestTemplate+Ribbon Integrated Circuit Breaker Hystrix, this article to see how Feign Integrated Circuit Breaker Hystrix, Feign Integrated Circuit Breaker Hystrix is relatively simple. Feign has its own circuit breaker Hystrix by default, so you don't need to add annotations to SpringBook's boo ...

Centralized Registry for All Components in Spring MVC What does a component centralized registry mean? To put it bluntly, if you start the project with pure annotations, the components registered in xml will be transferred to the implementation of the WebMvcConfigurer class. The following is an explan ...

I. Introduction Examples 1. Configure dependencies in maven's pom file as follows: <!-- log4j support --> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.17</version> </dependency> 2. Create the lo ...

Chapter 15 Generics General classes and methods can only use specific types: either basic types or custom types. If you want to write code that can be applied to many types of code, this rigid restriction will impose great constraints on the code. In object-oriented programming languages, polymorphism is a generalization mechanism. Generics imp ...

Links to the original text: https://blog.csdn.net/smile_Running/article/details/87009755 DBUtils Toolkit DBUtils is an open source JDBC tool class library provided by Apache. It is a simple encapsulation of JDBC and has a very low learning c ...

Articles Catalogue introduce Hadoop Stream The Role of Streaming Limitations of Streaming Relevant parameters of Streaming command Python implements MapReduce's WordCount introduce Hadoop is the foundation project of Apache, which solves the problem of long data processing time. MapReduce par ...

Sentinel is a current limiting scheme framework of Ali Open Source, which has the following characteristics: Rich application scenarios: Sentinel takes over the core scenarios of Alibaba's "Twenty-Eleven" traffic promotion in recent 10 years, such as second killing (i.e., burst traffic control within the system capacity can be tole ...

ab pressure testing tool Ab is a tool for testing Apache Hypertext Transfer Protocol (HTTP) servers. Apache comes with ab tools, which can test apache, IIs, tomcat, nginx, web and other servers But ab does not have Jmeter, Loadrunner, such as a variety of scenario design, various graphics reports a ...

Undertake previous blog posts ” springboot maven+layui upload file“ The file is uploaded to the remote server and returned to the file server storage path and file size needed to store the database. pom.xml dependencies <dependency> <groupId>org.apache.commons</groupI ...