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9, Service gateway: Gateway9.1 introduction to gatewayAs we all know, in the microservice architecture, a system will be divided into many microservices. So how can a client call so many microservices? If there is no gateway, we can only record the address of each microservice on the client and call it separately.Such an architecture will have ...

1, Introduction LinkedHashMap inherits from HashMap. In addition to the features of HashMap, LinkedHashMap also provides the function of keeping the same traversal order and insertion order. LinkedHashMap maintains a two-way linked list to ensure the consistency of traversal and insertion order.LinkedHashMap can be understood as a combin ...

Interceptor Interceptor configuration Interceptors in spring MVC are used to intercept the execution of controller methods. Interceptors in spring MVC need to implement HandlerInterceptor. package com.atguigu.springmvc.interceptor; import org.springframework.web.servlet.HandlerInterceptor; import org.springframework.web.servlet.ModelAn ...

Java IO Input (in) / output (out) Persistent storage File, memory, keyboard (data source) - > program - > file, memory, console (destination) Data source - > program: input (read data) in Program - > console: output (write data) out File: a collection of permanently stored data File storage media: USB flash disk, hard di ...

IDEA teaches you how to integrate Springboot+mybatis+maven Recently, I encountered a series of problems when trying to write an introductory springboot project with IDEA. I read a lot of articles on the Internet, but I didn't find a perfect solution, so I plan to write a little white tutorial and take this opportunity to consolidate it. I Pro ...

1, Computer overview 1.1 computer components Computers are mainly divided into two categories: hardware and software Hardware: it is composed of many modular components with different functions, and completes the four operation steps of input, processing, storage and output with the cooperation of software, mainly some electronic componen ...

head First, we need a Jason { "alg":"HS256" } Then we need to show it in Java String header = "{\n" + "\t\"alg\":\"HS256\"\n" + "}"; Then remove all spaces String header = "{"alg":"HS256"}"; If the error is reported, it is obvious that there is a problem, and then use the escape charact ...

Question 1: AtomicInteger thread safety principles The basic atomic class (taking AtomicInteger as an example) is mainly implemented through the CAS spin + volatile scheme, which not only ensures the thread safety of variable operation, but also avoids the high overhead of synchronized heavyweight locks, which greatly improves the executio ...

8. Bitwise operator & | ^ Convert the operand to binary, and then operate according to the rules of the operator, and the final result is converted to decimal &: two numbers in the same bit. If both are 1, it is 1, and if one is 0, it is 0|: two numbers in the same bit, one is 1, and both are 0^: two numbers in the same bit, the same ...

👏 About the author: Hello, I'm cabbage ~ ~, a sophomore in school, and a new star creator in the Java field.📝 Personal homepage: Cabbage CSDN blog📕 Series column: This article is written in the SpringBoot column: Explanation of SpringBoot knowledge points📧 If there are mistakes in the knowledge points of the article, please correct them! Le ...