anchor.diff:  
   Example boot app:
   
  -```
  +----
   @Configuration
   @EnableAutoConfiguration
   @EnableHystrix
  
positive.code: there are some computations internally in the server that make
  assumptions about the lease renewal period.
  
  == Service Discovery: Eureka Server
  
  Example eureka server:
  
  ```
  @Configuration
  @EnableAutoConfiguration
  @EnableEurekaServer
  
negative.code:     }
  }
  
  ----
  
  The `@HystrixCommand` is provided by a Netflix contrib library called
  "javanica". Spring Cloud automatically wraps Spring beans with that
  