Small D Class - New version of the micro-services springcloud + Docker tutorial _5-02 Netflix breaker open source components

notes

2, Netflix breaker Hystrix introduction of open source components
    Introduction: Introduction Hystrix basic knowledge and usage scenarios
    
    document Address:
        https://github.com/Netflix/Hystrix
        https://github.com/Netflix/Hystrix/wiki

    1, what is Hystrix ?
        1) hystrix corresponding Chinese name is "porcupine"
        
        2) hystrix English [hɪst'rɪks] United States [hɪst'rɪks]

    
    2, Why?
        In a distributed system, a service depends on more than one service, there may be a service call fails,
        such as overtime, abnormal, how can we ensure that in the case of a dependency problem, and will not lead to overall service failure,
        by Hystrix on can solve

        http://cloud.spring.io/spring-cloud-netflix/single/spring-cloud-netflix.html#_circuit_breaker_hystrix_clients

    3, provides a fuse, isolation, Fallback, cache, monitoring and other functions


    4, the fuse how to deal with ?
        After the error message error handling can fallback

        fallback data

 

Start;

The request of a billion times there is a failure rate of 0.3 percent is three million times failed.


Porcupine is the outer layer of a sting to protect themselves.