TrafficInterceptor
......
TrafficLevel
+ checkTrafficLevel(GradeEnum):TrafficResult+ doPostRequest()
ProjectEnum
ClassPathScanningCandidateComponentProvider
HighestTrafficLevel
CommonTrafficLevel
NormalTrafficLevel
HigherTrafficLevel
ModuleEnum
GradeEnum
TrafficAnnotationScanner
HandlerInterceptorAdapter
TrafficLevelFactory
+ getTrafficLevel(Class):TrafficLevel
