Setting Hystrix timeout with environment variable

spring-cloud hystrix spring-cloud-netflix
Michael Técourt picture Michael Técourt · Feb 6, 2017 · Viewed 11.6k times · Source

In order to change Hystrix's default request timeout (1000ms), one must set the following property : hystrix.command.default.execution.isolation.thread.timeoutInMilliseconds=2000

What is the corresponding environment variable ?

I would like to "tune" the timeout on my favorite cloud platform without touching the source code first. I'm pretty sure this one doesn't work : HYSTRIX_COMMAND_DEFAULT_EXECUTION_ISOLATION_THREAD_TIMEOUT_IN_MILLISECONDS=2000

EDIT : Problem was found with Spring Cloud Camden / Spring Boot 1.4.

Answer

jihor picture jihor · Jun 23, 2017

VM options and environment variables can be referenced from application configuration, which is often a more convenient way to set properties with longer names.

For example, one can define the following reference in application.yml:

hystrix.command.default.execution.isolation.thread.timeoutInMilliseconds: ${service.timeout}

which will be resolved from the VM option -Dservice.timeout=10000, setting the default Hystrix command timeout to 10 seconds. It is even simpler with environment variables - thanks to relaxed binding, any of these will work (export examples are for Linux):

  • export service.timeout=10000
  • export service_timeout=10000
  • export SERVICE.TIMEOUT=10000
  • export SERVICE_TIMEOUT=10000

The common approach is to use lowercase.dot.separated for VM arguments and ALL_CAPS_WITH_UNDERSCORES for environment variables.

Related questions

Hystrix & Ribbon Timeout Warnings

Environment Spring Boot 1.5.13.RELEASE Spring Cloud Edgware.SR3 Compiled with Java version "1.8.0_172-ea",Java(TM) SE Runtime Environment (build 1.8.0_172-ea-b03) and source level 1.8 Runtime JRE: in docker with openjdk:10.0.1-jre-slim Question I have a ribbon client called serviceA and associated …

Read More
Unable to get /hystrix.stream in Spring Cloud

I have created a microservice with following dependencies of Spring cloud version Camden.SR2. Spring Boot 1.4.1. http://localhost:8080/hystrix.stream is not responding. If I make the Spring Cloud version as Brixton.*(RELEASE, SR1,...), I get only ping: as reply …

Read More
Configuring hystrix command properties using application.yaml in Spring-Boot application

I am having same issue, where i am trying to override the hystrix properties in application.yaml. When I run the app & check the properties with localhost:port/app-context/hystrix.stream, I get all default values instead. here is …

Read More