SpringCloud combat project full set of learning tutorials in serial

PassJava learning tutorial

Introduction

The PassJava-Learning project is a learning tutorial for the PassJava project. Explain the main points of architecture, business and technology.
PassJava is an 面试刷题open source system for Java . You can use small programs to view common interview questions in a fraction of the time to consolidate the foundation of Java.
PassJava project can teach you how to build SpringBoot project, Spring Cloud project
Use popular technologies such as SpringBoot, MyBatis, Redis, MySql, MongoDB, RabbitMQ, Elasticsearch, and adopt Docker containerized deployment.

Better reading experience

Document address: http://www.jayh.club
Alternate address: https://jackson0714.github.io/PassJava-Learning

Document serialization directory

Introduction to SpringCloud Alibaba components

1. Overview of Spring Cloud Alibaba

Spring Cloud Alibaba is committed to providing a one-stop solution for microservice development. This project contains the necessary components for the development of distributed application microservices, so that developers can easily use these components to develop distributed application services through the Spring Cloud programming model.

Relying on Spring Cloud Alibaba, you only need to add some annotations and a small amount of configuration to connect Spring Cloud applications to Alibaba microservices solutions, and quickly build distributed application systems through Alibaba middleware.

Github:https://github.com/alibaba/spring-cloud-alibaba

Several major pain points of Spring Cloud

Some components are stopped for maintenance and update, and problems are not easy to solve
Some environments are more complicated to build, and there is no very friendly visual interface
Configuration is relatively complex and requires high learning costs

Advantages of Spring Cloud Alibaba

Ali has passed the test of time
Reasonable design
Has a good visual interface to facilitate operation and maintenance monitoring and troubleshooting
Simple environment construction and configuration, low learning cost

PassJava project with SpringCloud Alibaba technology matching solution

description	Spring Cloud	Spring Cloud Alibaba	Combination selection
Service discovery component	Eureka (stop maintenance) service discovery component	Nacos Registration Center	Spring Cloud Alibaba - Nacos
Configuration Center Components	Spring Cloud Config configuration center	Nacos Configuration Center	Spring Cloud Alibaba - Nacos
Break protection components	Hystrix circuit protection	Sentinel service fault tolerance	Spring Cloud Alibaba - Sentinel
Link tracking component	Sleuth call chain monitoring	/	Spring Cloud - Sleuth
Load balancing components	Ribbon	/	Spring Cloud - Ribbon
Remote call component	OpenFeign （HTTP+JSON）	Dubbo (RPC framework)	Spring Cloud - OpenFeign
Distributed transaction	/	Seata distributed transactions	Spring Cloud Alibaba - Seata
API Gateway	Gateway	/	Spring Cloud - Gateway

Final technical selection:

Spring Cloud Alibaba - Nacos 实现注册中心
Spring Cloud Alibaba - Nacos 实现配置中心
Spring Cloud Alibaba - Sentinel  实现服务容错
Spring Cloud Alibaba - Seata 实现分布式事务

Spring Cloud - Ribbon 实现负载均衡
Spring Cloud - Feign 实现远程调用
Spring Cloud - Gateway API网关
Spring Cloud - Sleuth 实现调用链监控

2. Spring Cloud Alibaba version

The version number format of the project is in the form of xxx, where the numeric type of x is a number, which starts from 0 and is not limited to the range of 0 ~ 9. When the project is in the incubator stage, the first version number is fixed at 0, that is, the version number is in the format of 0.xx.

Because the interfaces and annotations of Spring Boot 1 and Spring Boot 2 in the Actuator module have changed a lot, and the upgrade of spring-cloud-commons from version 1.xx to version 2.0.0 also has major changes, so Ali adopts the version with SpringBoot Consistent version:

The 1.5.x version applies to Spring Boot 1.5.x
Version 2.0.x applies to Spring Boot 2.0.x
The 2.1.x version applies to Spring Boot 2.1.x
Version 2.2.x applies to Spring Boot 2.2.x

Spring Cloud Alibaba version and Spring Cloud and Spring Boot version compatibility list

Spring Cloud version	Spring Cloud Alibaba version	Spring Boot version
Spring Cloud Hoxton.SR3	2.2.x.RELEASE	2.2.x.RELEASE
Spring Cloud Greenwich	2.1.x.RELEASE	2.1.x.RELEASE
Spring Cloud Finchley	2.0.x.RELEASE	2.0.x.RELEASE
Spring Cloud Edgware	1.5.x.RELEASE	1.5.x.RELEASE

We use Spring Cloud Hoxton.SR3, Spring Cloud Alibaba 2.2.0.RELEASE,Spring Boot 2.2.6 RELEASE

PassJava-Common pom.xml file introduces Spring Cloud Alibaba dependency

<dependencyManagement>
    <dependencies>
        <!--  Spring Cloud Alibaba 依赖  -->
        <dependency>
            <groupId>com.alibaba.cloud</groupId>
            <artifactId>spring-cloud-alibaba-dependencies</artifactId>
            <version>2.2.0.RELEASE</version>
            <type>pom</type>
            <scope>import</scope>
        </dependency>
    </dependencies>
</dependencyManagement>

Code address

https://github.com/Jackson0714/PassJava-Platform

16. Spring Cloud combat project-Introduction to Spring Cloud Alibaba components