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CIRCUIT
 BREAKING

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@mattheath

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DATABASE APPLICATION

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DATABASE APPLICATION

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DATABASE DATABASES APPLICATION CACHE SEARCH CAT GIFS

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ALL HAIL THE MONOLITH

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MONOLITH

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FALLACIES OF DISTRIBUTED COMPUTING

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DEALING
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TIMING OUT AND MOVING ON

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SENSIBLE
 TIMEOUTS?

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MEASURE EVERYTHING

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TIMEOUT?

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api service.signup service.profile api service.signup service.profile

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api service.signup service.profile api service.signup service.profile

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api service.signup service.profile api service.signup service.profile

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api service.signup service.profile api service.signup service.profile ? ??

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api service.signup service.profile api service.signup service.profile ?

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FAST RETRY
 FAILURES?

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MAKE PROBLEMS WORSE.

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api service.signup service.profile api service.signup service.profile

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api service.signup service.profile api service.signup service.profile

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api service.signup service.profile api service.signup service.profile

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DEFERRED RETRIES?

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EVENT DRIVEN
 ARCHITECTURES

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CIRCUIT
 BREAKERS

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api service.signup service.profile api service.signup service.profile

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api service.signup service.profile api service.signup service.profile Server Client Logic

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api service.signup service.profile api service.signup service.profile Server Client Logic

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Client Remote Server Circuit Breaker

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Client Remote Server Circuit Breaker Error! Error!

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Client Remote Server Circuit Breaker Timeout! Timeout!

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Client Remote Server Circuit Breaker Circuit Open! OPEN

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client := circuit.NewHTTPClient( time.Second * 5, // timeout 10, // threshold nil // http.Client ) resp, err := client.Get( “http://beesbeesbees.com/" )

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cb := circuit.NewRateBreaker( 0.95, // trip at 95% errors 100, // with 100 samples ) cb.Call(func() error { // do something }, time.Second * 5)

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MONITORING

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DISTRIBUTED
 TRACING

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Switch & Fuses - The Q Speaks: http://goo.gl/RVglEq Network Cables - Steven Kreuzer: http://goo.gl/QS0Q0K MSC Napoli - Gary Tanner: http://goo.gl/Yyoatk Stopwatch - William Warby: http://goo.gl/LZZBb6 Shoot Again - Stéfan: http://goo.gl/TCgg8R Hystrix diagrams via Netflix: http://goo.gl/Gul9n4 THANKS