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src/main/java/com/netflix/hystrix/examples
README.md
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README.md

hystrix-examples

This module contains examples of using HystrixCommand, HystrixCollapser and other aspects of Hystrix.

Documentation

Documentation related to the examples in this module is on the How To Use page.

Demo

To run a demo app do the following:

$ git clone git@github.com: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.

Maven Central

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" />
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