求解释springboot + dubbo 中的 spring.dubbo.registry.address 这个配置为什么多台需要backup

Question

spring.dubbo.registry.address=zookeeper://10.20.153.10:2181?backup=10.20.153.11:2181

 

配置这个地址，需要配置多台的时候，为什么是需要backup 这种写法？

为什么不是以下这种呢

spring.dubbo.registry.address=10.20.153.10:2181,10.20.153.10:2182,10.20.153.10:2183

Answer 1

https://deepmind.t-salon.cc/article/4837 整理了一下

Answer 2

zookeeper集群注册中心正确配置应该是

spring.dubbo.registry.address=zookeeper://127.0.0.1:2181?backup=127.0.0.1:2182,127.0.0.1:2183

或者
spring.dubbo.registry.protocol=zookeeper

spring.dubbo.registry.address=127.0.0.1:2181,127.0.0.1:2182,127.0.0.1:2183

同理，当这样用

<parent>    
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-parent</artifactId>
    <version>2.1.1.RELEASE</version>
    <relativePath/>
</parent>

<dubbo.version>2.6.5</dubbo.version>

<!-- Dubbo Spring Boot Starter -->
<dependency>
    <groupId>com.alibaba.boot</groupId>
    <artifactId>dubbo-spring-boot-starter</artifactId>
    <version>0.2.1.RELEASE</version>
</dependency>
<dependency>
    <groupId>com.alibaba</groupId>
    <artifactId>dubbo</artifactId>
    <version>${dubbo.version}</version>
</dependency>

dubbo.registry.address=zookeeper://127.0.0.1:2181?backup=127.0.0.1:2182,127.0.0.1:2183

相等于

dubbo.registry.protocol=zookeeper

dubbo.registry.address=127.0.0.1:2181,127.0.0.1:2182,127.0.0.1:2183

Answer 3

我也想问这个问题，求高手da'yi

Answer 4

取第一个就行了，