This module contains examples of using HystrixCommand, HystrixCollapser and other aspects of Hystrix.
Documentation related to the examples in this module is on the How To Use page.
To run a demo app do the following:
$ git clone [email protected]:Netflix/Hystrix.git
$ cd Hystrix/
./gradlew runDemo
You will see output similar to the following:
Request => GetUserAccountCommand[SUCCESS][8ms], GetPaymentInformationCommand[SUCCESS][20ms], GetUserAccountCommand[SUCCESS, RESPONSE_FROM_CACHE][0ms]x2, GetOrderCommand[SUCCESS][101ms], CreditCardCommand[SUCCESS][1075ms]
Request => GetUserAccountCommand[FAILURE, FALLBACK_SUCCESS][2ms], GetPaymentInformationCommand[SUCCESS][22ms], GetUserAccountCommand[FAILURE, FALLBACK_SUCCESS, RESPONSE_FROM_CACHE][0ms]x2, GetOrderCommand[SUCCESS][130ms], CreditCardCommand[SUCCESS][1050ms]
Request => GetUserAccountCommand[FAILURE, FALLBACK_SUCCESS][4ms], GetPaymentInformationCommand[SUCCESS][19ms], GetUserAccountCommand[FAILURE, FALLBACK_SUCCESS, RESPONSE_FROM_CACHE][0ms]x2, GetOrderCommand[SUCCESS][145ms], CreditCardCommand[SUCCESS][1301ms]
Request => GetUserAccountCommand[SUCCESS][4ms], GetPaymentInformationCommand[SUCCESS][11ms], GetUserAccountCommand[SUCCESS, RESPONSE_FROM_CACHE][0ms]x2, GetOrderCommand[SUCCESS][93ms], CreditCardCommand[SUCCESS][1409ms]
#####################################################################################
# CreditCardCommand: Requests: 17 Errors: 0 (0%) Mean: 1171 75th: 1391 90th: 1470 99th: 1486
# GetOrderCommand: Requests: 21 Errors: 0 (0%) Mean: 100 75th: 144 90th: 207 99th: 230
# GetUserAccountCommand: Requests: 21 Errors: 4 (19%) Mean: 8 75th: 11 90th: 46 99th: 51
# GetPaymentInformationCommand: Requests: 21 Errors: 0 (0%) Mean: 18 75th: 21 90th: 24 99th: 25
#####################################################################################
Request => GetUserAccountCommand[SUCCESS][10ms], GetPaymentInformationCommand[SUCCESS][16ms], GetUserAccountCommand[SUCCESS, RESPONSE_FROM_CACHE][0ms]x2, GetOrderCommand[SUCCESS][51ms], CreditCardCommand[SUCCESS][922ms]
Request => GetUserAccountCommand[SUCCESS][12ms], GetPaymentInformationCommand[SUCCESS][12ms], GetUserAccountCommand[SUCCESS, RESPONSE_FROM_CACHE][0ms]x2, GetOrderCommand[SUCCESS][68ms], CreditCardCommand[SUCCESS][1257ms]
Request => GetUserAccountCommand[SUCCESS][10ms], GetPaymentInformationCommand[SUCCESS][11ms], GetUserAccountCommand[SUCCESS, RESPONSE_FROM_CACHE][0ms]x2, GetOrderCommand[SUCCESS][78ms], CreditCardCommand[SUCCESS][1295ms]
Request => GetUserAccountCommand[FAILURE, FALLBACK_SUCCESS][6ms], GetPaymentInformationCommand[SUCCESS][11ms], GetUserAccountCommand[FAILURE, FALLBACK_SUCCESS, RESPONSE_FROM_CACHE][0ms]x2, GetOrderCommand[SUCCESS][153ms], CreditCardCommand[SUCCESS][1321ms]
This demo simulates 4 different HystrixCommand implementations with failures, latency, timeouts and duplicate calls in a multi-threaded environment.
It logs the results of HystrixRequestLog and metrics from HystrixCommandMetrics.
Binaries and dependencies for this module can be found on http://search.maven.org.
GroupId: com.netflix.hystrix
ArtifactId: hystrix-examples
Example for Maven:
<dependency>
<groupId>com.netflix.hystrix</groupId>
<artifactId>hystrix-examples</artifactId>
<version>1.0.2</version>
</dependency>and for Ivy:
<dependency org="com.netflix.hystrix" name="hystrix-examples" rev="1.0.2" />