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Distributed system services

2022-04-23 03:02:00 【Leon_ Jinhai_ Sun】

# Service failure
- “ Fuse ” It's a switching device , When a service unit fails , Through the circuit breaker (hystrix) Fault monitoring , An abnormal condition is triggered , Directly fusing the entire service . Returns an expected 、 Alternative responses that can be handled (FallBack), Instead of waiting for a long time or throwing an exception that the calling method cannot handle , This ensures that the thread of the service caller will not be occupied for a long time , Avoid fault spreading in distributed systems , Even an avalanche . If the condition of the target service improves, the invocation is resumed . Service fusing is an important means to solve service avalanche .

# Service fusing diagram

 

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