The document discusses real-time traffic visualization using Vizceral and Hystrix. Hystrix is a library that helps control interactions between distributed services through circuit breakers, fallback handling, and metrics collection. Turbine aggregates Hystrix stream data into a single stream. Vizceral is a Netflix tool that visualizes traffic between components. The presentation demonstrates setting up Hystrix, Turbine, and Vizceral together to provide real-time visualization of traffic between distributed services.

1. Real Time Traffic
Visualization with
Vizceral and Hystrix
Roberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

2. Who am I?
Roberto Perez Alcolea
• Mexican
• RedSky Team @ Target
• Groovy Enthusiast
• roberto@perezalcolea.info
• @rpalcolea
Roberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

3. Traffic
VisualizationRoberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

4. Roberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

5. Roberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

6. Hystrix + Turbine + Vizceral
Roberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

7. Hystrix
Roberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

8. Hystrix
Library to help control interactions between distributed services
• Times out slow commands
• Rate limit number of concurrent commands
• Circuit breaker
• Fallback on failures
• Real-Time dashboard for visibility
• Measurements
Roberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

9. Hystrix
...
private static final HystrixObservableCommand.Setter hystrixSetter = HystrixObservableCommand.Setter
.withGroupKey(HystrixCommandGroupKey.Factory.asKey("github-service"))
.andCommandKey(HystrixCommandKey.Factory.asKey("GithubService.getRepositories"))
.andCommandPropertiesDefaults(HystrixCommandProperties.defaultSetter())
...
Observable<Map> call(String language) {
return new HystrixObservableCommand<Map>(hystrixSetter) {
@Override
protected Observable<Map> construct() {
return getRepositories(language)
}
@Override
protected Observable<Map> resumeWithFallback() {
return Observable.just([:])
}
}.toObservable()
}
Roberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

10. Hystrix
...
private static final HystrixObservableCommand.Setter hystrixSetter = HystrixObservableCommand.Setter
.withGroupKey(HystrixCommandGroupKey.Factory.asKey("github-service"))
.andCommandKey(HystrixCommandKey.Factory.asKey("GithubService.getRepositories"))
.andCommandPropertiesDefaults(HystrixCommandProperties.defaultSetter())
...
Observable<Map> call(String language) {
return new HystrixObservableCommand<Map>(hystrixSetter) {
@Override
protected Observable<Map> construct() {
return getRepositories(language)
}
@Override
protected Observable<Map> resumeWithFallback() {
return Observable.just([:])
}
}.toObservable()
}
Roberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

11. Hystrix Flow
Roberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

12. Isolation
Roberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

13. Hystrix Command Metrics
{
"type": "HystrixCommand",
"name": "GithubService.findRepositories",
"group": "github-api",
"currentTime": 1498355684319,
"isCircuitBreakerOpen": false,
"errorPercentage": 0,
"errorCount": 0,
"requestCount": 1,
"rollingCountBadRequests": 0, "rollingCountCollapsedRequests": 0, "rollingCountEmit": 1, "rollingCountExceptionsThrown": 0,
"rollingCountFailure": 0, "rollingCountFallbackFailure": 0, "rollingCountFallbackRejection": 0, "rollingCountFallbackSuccess": 0,
"rollingCountResponsesFromCache": 0, "rollingCountSemaphoreRejected": 0, "rollingCountShortCircuited": 0, "rollingCountSuccess": 1,
"rollingCountThreadPoolRejected": 0, "rollingCountTimeout": 0,
"currentConcurrentExecutionCount": 0,
"rollingMaxConcurrentExecutionCount": 1,
"latencyExecute_mean": 0,
"latencyExecute": {
"99": 0,
},
"latencyTotal_mean": 0,
"latencyTotal": {
"99": 0,
},
}
Roberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

14. Hystrix Command Metrics
{
"type": "HystrixCommand",
"name": "GithubService.findRepositories",
"group": "github-api",
"currentTime": 1498355684319,
"isCircuitBreakerOpen": false,
"errorPercentage": 0,
"errorCount": 0,
"requestCount": 1,
"rollingCountBadRequests": 0, "rollingCountCollapsedRequests": 0, "rollingCountEmit": 1, "rollingCountExceptionsThrown": 0,
"rollingCountFailure": 0, "rollingCountFallbackFailure": 0, "rollingCountFallbackRejection": 0, "rollingCountFallbackSuccess": 0,
"rollingCountResponsesFromCache": 0, "rollingCountSemaphoreRejected": 0, "rollingCountShortCircuited": 0, "rollingCountSuccess": 1,
"rollingCountThreadPoolRejected": 0, "rollingCountTimeout": 0,
"currentConcurrentExecutionCount": 0,
"rollingMaxConcurrentExecutionCount": 1,
"latencyExecute_mean": 0,
"latencyExecute": {
"99": 0,
},
"latencyTotal_mean": 0,
"latencyTotal": {
"99": 0,
},
}
Roberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

15. Hystrix Command Metrics
{
"type": "HystrixCommand",
"name": "GithubService.findRepositories",
"group": "github-api",
"currentTime": 1498355684319,
"isCircuitBreakerOpen": false,
"errorPercentage": 0,
"errorCount": 0,
"requestCount": 1,
"rollingCountBadRequests": 0, "rollingCountCollapsedRequests": 0, "rollingCountEmit": 1, "rollingCountExceptionsThrown": 0,
"rollingCountFailure": 0, "rollingCountFallbackFailure": 0, "rollingCountFallbackRejection": 0, "rollingCountFallbackSuccess": 0,
"rollingCountResponsesFromCache": 0, "rollingCountSemaphoreRejected": 0, "rollingCountShortCircuited": 0, "rollingCountSuccess": 1,
"rollingCountThreadPoolRejected": 0, "rollingCountTimeout": 0,
"currentConcurrentExecutionCount": 0,
"rollingMaxConcurrentExecutionCount": 1,
"latencyExecute_mean": 0,
"latencyExecute": {
"99": 0,
},
"latencyTotal_mean": 0,
"latencyTotal": {
"99": 0,
},
}
Roberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

16. Hystrix Command Metrics
{
"type": "HystrixCommand",
"name": "GithubService.findRepositories",
"group": "github-api",
"currentTime": 1498355684319,
"isCircuitBreakerOpen": false,
"errorPercentage": 0,
"errorCount": 0,
"requestCount": 1,
"rollingCountBadRequests": 0, "rollingCountCollapsedRequests": 0, "rollingCountEmit": 1, "rollingCountExceptionsThrown": 0,
"rollingCountFailure": 0, "rollingCountFallbackFailure": 0, "rollingCountFallbackRejection": 0, "rollingCountFallbackSuccess": 0,
"rollingCountResponsesFromCache": 0, "rollingCountSemaphoreRejected": 0, "rollingCountShortCircuited": 0, "rollingCountSuccess": 1,
"rollingCountThreadPoolRejected": 0, "rollingCountTimeout": 0,
"currentConcurrentExecutionCount": 0,
"rollingMaxConcurrentExecutionCount": 1,
"latencyExecute_mean": 0,
"latencyExecute": {
"99": 0,
},
"latencyTotal_mean": 0,
"latencyTotal": {
"99": 0,
},
}
Roberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

17. Hystrix
DemoRoberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

18. Hystrix Dashboard
Roberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

19. Turbine
• Aggregates streams of Server-Sent Event (SSE) JSON data into a
single stream
• Clusters
• Instance discovery
Roberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

20. Turbine (How it works)
Roberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

21. Vizceral
Vizceral is a tool from Netflix to visualize traffic between components
Roberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

22. Putting All Together
DemoRoberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

23. Roberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017

24. Thank
YouRoberto Perez Alcolea - @rpalcolea - GR8ConfUS 2017