spring cloud ribbon 负载均衡

Ribbon 负载均衡

首先引入依赖

<dependency>

<groupId>org.springframework.cloud</groupId>

<artifactId>spring-cloud-starter-netflix-ribbon</artifactId>

</dependency>

修改application类，加入

@LoadBalanced

@Bean

public RestTemplate restTemplate(){

return new RestTemplate();

}

controller类中调用

@Autowired

private RestTemplate restTemplate;

@GetMapping("user")

@ResponseBody

public List<User> findAll() {

List<User> users = restTemplate.getForObject("http://USER/findAll",List.class);

return users;

}

yml可选配置参数

#预加载配置,默认为懒加载

ribbon:

eager-load:

enabled: true

clients: mima-cloud-producer,mima-cloud-producer2

#这里使用服务提供者的instanceName

mima-cloud-producer:

ribbon:

# 代表Ribbon使用的负载均衡策略

NFLoadBalancerRuleClassName: com.netflix.loadbalancer.RandomRule

# 每台服务器最多重试次数，但是首次调用不包括在内， Max number of retries on the same server (excluding the first try)

MaxAutoRetries: 1

# 最多重试多少台服务器，Max number of next servers to retry (excluding the first server)

MaxAutoRetriesNextServer: 1

# 无论是请求超时或者socket read timeout都进行重试，Whether all operations can be retried for this client

OkToRetryOnAllOperations: true

# Interval to refresh the server list from the source

ServerListRefreshInterval: 2000

# Connect timeout used by Apache HttpClient

ConnectTimeout: 3000

# Read timeout used by Apache HttpClient

ReadTimeout: 3000

mima-cloud-producer2:

ribbon:

NFLoadBalancerRuleClassName: com.netflix.loadbalancer.ZoneAvoidanceRule

文章来源: https://blog.csdn.net/qq_36760953/article/details/91459812