SpringCloud重试机制配置详解

首先声明一点，这里的重试并不是报错以后的重试，而是负载均衡客户端发现远程请求实例不可到达后，去重试其他实例。

@bean
@loadbalanced
resttemplate resttemplate() {
  httpcomponentsclienthttprequestfactory httprequestfactory = new httpcomponentsclienthttprequestfactory();
  httprequestfactory.setreadtimeout(5000);
  httprequestfactory.setconnecttimeout(5000);
  return new resttemplate(httprequestfactory);
} 

feign重试机制 

feign默认是通过自己包下的retryer进行重试配置,默认是5次

package feign;
import static java.util.concurrent.timeunit.seconds;

/**
 * cloned for each invocation to {@link client#execute(request, feign.request.options)}.
 * implementations may keep state to determine if retry operations should continue or not.
 */
public interface retryer extends cloneable {

 /**
  * if retry is permitted, return (possibly after sleeping). otherwise propagate the exception.
  */
 void continueorpropagate(retryableexception e);

 retryer clone();

 public static class default implements retryer {

  private final int maxattempts;
  private final long period;
  private final long maxperiod;
  int attempt;
  long sleptformillis;

  public default() {
   this(100, seconds.tomillis(1), 5);
  }

  public default(long period, long maxperiod, int maxattempts) {
   this.period = period;
   this.maxperiod = maxperiod;
   this.maxattempts = maxattempts;
   this.attempt = 1;
  } 

feign取消重试

@bean
  retryer feignretryer() {
    return retryer.never_retry;
  } 

feign请求超时设置

@bean
request.options requestoptions(configurableenvironment env){
  int ribbonreadtimeout = env.getproperty("ribbon.readtimeout", int.class, 6000);
  int ribbonconnectiontimeout = env.getproperty("ribbon.connecttimeout", int.class, 3000);

  return new request.options(ribbonconnectiontimeout, ribbonreadtimeout);
}

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。