Spring Cloud common components timeout summary

 In this paper, Spring Cloud Finchley.RELEASE version, for example.

RestTemplate timeout

RestTemplate timeout can be set through RestTemplateBuilderl:

@Bean
 public Residual Template rest template (template builder rest Rest template builder) {
     return rest template builder 
            .setConnectTimeout (...) 
       .setReadTimeout (...) 
       .build (); 
}

Ribbon timeout

# Configure global timeouts 
Ribbon: 
  ReadTimeout: 2000 # default 5S 
  the ConnectTimeout: 1000 # default 2S 

# configuration for a specific service 
Service-the above mentioned id: 
  Ribbon: 
    ReadTimeout: 1000 
    the ConnectTimeout: 1000

For details, see the default configuration list .

Feign timeout

No details of the document, but some sample code configuration includes:

Feign: 
  Client: 
    config: 
      default: 
        connectTimeout: 5000 # default 10s 
        ReadTimeout: 5000 # default 60s 
        loggerLevel: Basic

Feign default timeout in Request.Options settings.

Note: If you are using Feign Ribbon and at the same time within the application, then the timeout configured to Feign based.

Hystrix timeout

hystrix:
  command:
    default:
      execution:
        timeout:
          enabled: true #默认true
        isolation:
          thread:
            timeoutInMilliseconds: 5000

As Hystrix fuse, usually when used with other components (e.g. Ribbon):

// pseudo-code is called 
hystrix (retry (ribbon ()) )

At this time you need to be set to timeout longer than the other components, or retry mechanism will fail.

Zuul timeout

Since Zuul (Spring Cloud) and used Hystrix Ribbon, so it is configured timeout combination of these two parts. Meanwhile, if the URL routing configuration, but not by way of services (without Ribbon), also you need to configure zuul.host.connect-timeout-millis. Here is the complete configuration:

Zuul: 
  routes: 
    Service-the above mentioned id: 
      path: / the Test / ** 
      serviceId: the SERVICE-ID 
    ADMIN: 
      path: / ADMIN / ** 
      url: http://test.com/admin 
  Host: # timeout for initiating direct URL request configuration (without Ribbon) 
    max-Total-Connections: 5000 
    max-per-route-Connections: 500 

# for hystrix timeout configuration 
hystrix: 
  the Command: 
    default: 
      Execution: 
        timeout: 
          Enabled: to true 
        Isolation: 
          the Thread: 
            timeoutInMilliseconds: 5000 

# for Ribbon timeout configuration 
Ribbon: 
  ReadTimeout: 1500 
  the ConnectTimeout: 1000

If you mistakenly Hystrix timeout configured 2s, and Ribbon configured 5s, you see something similar to the following warning in every request:

2019-01-19 17:39:20.981 WARN 36568 --- [io-60362-exec-9] o.s.c.n.z.f.r.s.AbstractRibbonCommand : The Hystrix timeout of 2000ms for the command SERVICE-ID is set lower than the combination of the Ribbon read and connect timeout, 12000ms.

reference

Feign Client Configuration

Spring Cloud summarizes the components timeout