The Feign client is, by default, integrated with Ribbon and Hystrix. This means that, if you wish, you can apply different approaches to deal with latency and timeouts in your system when using that library. The first of these approaches is a connection retry mechanism provided by the Ribbon client. The second is a circuit breaker pattern and a fallback implementation available under the Hystrix project, which has already been discussed in the previous sections of this chapter.
Failures and the circuit breaker pattern with Feign
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