springcloud-alibaba核心组件后端环境搭建

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• 服务注册与发现: nacos
• 配置中心: nacos
• 服务远程调用: openfeign
• 微服务网关: gateway
• 服务限流降级熔断等: sentinel

实现的功能demo

• openfeign服务远程调用
• sentinel限流测试
• gateway网关调用2个微服务
• nacos的服务注册与发现

软件架构(环境)

• jdk: 1.8
• maven: 3.5.2
• nacos: 注册中心-配置中心
• gateway: 微服务网关
• openfeign: 服务远程调用
• sentinel: 熔断,限流,服务保护等

nacos上等相关配置

order服务

• dataId: cloud-order-dev.yaml
• Group: DEV_GROUP

server:
  port: 8081
spring:
  application:
    name: cloud-order
  cloud:
    nacos:
      discovery:
        server-addr: localhost:8848
        namespace: 0d497b0f-19fe-47f3-a5d0-6499c698841a
        group: DEV_GROUP
    sentinel:
      transport:
        dashboard: localhost:8089
      eager: true
feign:
  sentinel:
    enabled: true

user服务

• dataId: cloud-user-dev.yaml
• Group: DEV_GROUP

server:
  port: 8082
spring:
  application:
    name: cloud-user
  cloud:
    nacos:
      discovery:
        server-addr: localhost:8848
        namespace: 0d497b0f-19fe-47f3-a5d0-6499c698841a
        group: DEV_GROUP
    sentinel:
      transport:
        dashboard: localhost:8089
      eager: true
feign:
  sentinel:
    enabled: true

gateway

• dataId: cloud-gateway-dev.yaml
• Group: DEV_GROUP

server:
  port: 8083
spring:
  cloud:
    nacos:
      discovery:
        server-addr: localhost:8848
        namespace: 0d497b0f-19fe-47f3-a5d0-6499c698841a
        group: DEV_GROUP
    gateway:
      globalcors:
          corsConfigurations:
            '[/**]': 
              allowedOrigins: "*" 
              allowedHeaders: "*"
              allowCredentials: true
              allowedMethods:
                - GET
                - POST
                - PUT
                - DELETE
      routes:
        - id: cloud-order
          uri: lb://cloud-order
          predicates:
          - Path=/cloud-order/**
          filters:
          - StripPrefix=1
        - id: cloud-user
          uri: lb://cloud-user
          predicates:
          - Path=/cloud-user/**
          filters:
          - StripPrefix=1
  application:
    name: cloud-gateway