[microservices ｜ Nacos] Nacos implements the advanced version of distributed configuration center

Spring Cloud Alibaba Nacos Config Can support custom Data Id Configuration of .

Turn off the configuration completely

By setting spring.cloud.nacos.config.enabled = false To shut it down completely Spring Cloud Nacos Config

priority

Through the test, multiple Data Id When configuring at the same time , His priority relationship is spring.cloud.nacos.config.ext-config[n].data-id among n The greater the value of , The higher the priority .

Shared configuration

		#  Shared files 
        shared-configs[0]:
          dataId: shared.yaml
          #  Automatically refresh , Not on by default 
          refresh: true
        shared-configs[1]:
          dataId: shared1.yaml
          refresh: true

Extended configuration

         #  Extension files 
        extension-configs[0]:
          dataId: extension.yaml
          refresh: true
        extension-configs[1]:
          dataId: extension1.yaml
          refresh: true

Automatically refresh

If it is written in the program @Value annotation , May adopt @RefreshScope Implement refresh , Just add the annotation to the specified class

Configure load priority in different ways ：

Nacos The configuration center currently provides the following three configuration capabilities from Nacos Pull the relevant configuration , When the three methods are used together , One of their priorities is :A < B < C：

A： adopt spring.cloud.nacos.config.shared-configs[n].data-id Support multiple shares Data Id Configuration of
B： adopt spring.cloud.nacos.config.extension-configs[n].data-id The way to support multiple extensions Data Id Configuration of
C： Through internal rules (spring.cloud.nacos.config.prefix、spring.cloud.nacos.config.file-extension、spring.cloud.nacos.config.group) Automatically generate related Data Id To configure

bootstrap.yml

spring:
  profiles:
    active: dev
  application:
    name: ossa-service-producer
  cloud:
    nacos:
      # docker start-up nacos：
      # docker run --name mynacos -itd -e MODE=standalone -p 8848:8848 -p 9848:9848 -p 9849:9849 nacos/nacos-server:v2.0.3
      discovery:
        server-addr: 1.117.66.67
#        namespace: d5042bab-be48-4946-9465-fb6e15ab75b7
#        group: OSSA_GROUP
      config:
      #  The default is   service name  +  Environment name  + . + yaml
        server-addr: 1.117.66.67
        file-extension: yaml
        refresh-enabled: true
#        group: OSSA_GROUP
#        namespace: d5042bab-be48-4946-9465-fb6e15ab75b7
		#  Shared files 
        shared-configs[0]:
          dataId: shared.yaml
          #  Automatically refresh , Not on by default 
          refresh: true
        shared-configs[1]:
          dataId: shared1.yaml
          refresh: true
          #  Extension files 
        extension-configs[0]:
          dataId: extension.yaml
          refresh: true
        extension-configs[1]:
          dataId: extension1.yaml
          refresh: true