spring cloud zuul 설정 상세 설명

zuul:
  #       ，   false
  #              ，          ribbon      
  #        
  #          org.springframework.retry
  #         spring-retry
  #    
  retryable: false
  #          ，              /api
  prefix: /api
  #          header          ，   "Cookie", "Set-Cookie", "Authorization"
  #     PreDecorationFilter.run()   ，               ignored-headers  
  sensitive-headers:
    - Cookie
    - Set-Cookie
    - Authorization
    - token
  #            ，       ProxyRequestHelper.buildZuulRequestHeaders(HttpServletRequest request)    ，
  #       ignored-headers      header        header ribbon  
  ignored-headers:
    - token
  #       SimpleHostRoutingFilter  ，RibbonRoutingFilter    ribbon   
  host:
    #      ，   200
    max-total-connections: 200
    #               ，   20
    max-per-route-connections: 20
    # http client  connection pool     connection     ，   -1，   
    connection-request-timeout-millis: -1
    #          ；，   2000ms
    connect-timeout-millis: 2000
    #       ，   10000ms
    socket-timeout-millis: 10000
  #     
  routes:
    #          ，     Map
    user-server:
      #             ，       ，      /user-server/**
      path: /user-server/**
      # spring cloud  id，             
      serverId: user-server
      #        prefix，   true，  false          /api
      stripPrefix: true
      #             ，   ribbon、hystrix，      RibbonRoutingFilter，     SimpleHostRoutingFilter
      url: http://localhost:9000
      #          ，         
      sensitive-headers:
        - Cookie
        - Set-Cookie
        - Authorization
      #          ，   false,       sensitive-headers      ，    0  true
      custom-sensitive-headers: false
  #    THREAD（     ）, SEMAPHORE（     ），   SEMAPHORE
  #       hystrix  ，        HystrixCommond，hystrix         、     
  ribbonIsolationStrategy: SEMAPHORE
  #                   ，   100，           100          100
  semaphore:
    maxSemaphores: 100
  #             ，      100
  eureka:
    #          
    user-server:
      #      
      semaphore:
        #      ，            100，              
        #        AbstractRibbonCommand.getSetter(final String commandKey,ZuulProperties zuulProperties, IClientConfig config)    
        maxSemaphores: 100
        
# ribbon  ,ribbon       RibbonClientConfiguration.ribbonClientConfig()
#      config.loadProperties(this.name);       ribbon   
#       eureka                    http       ，                     
ribbon:
  #          DefaultLoadBalancerRetryHandler         
  #     ：public DefaultLoadBalancerRetryHandler(IClientConfig clientConfig)
  #              ，   false，               GET  ，     true      
  #   ：return HttpMethod.GET == method || lbContext.isOkToRetryOnAllOperations();
  #         RetryTemplate.doExecute(RetryCallback retryCallback,RecoveryCallback recoveryCallback, RetryState state)
  #           ，N       ，R    
  #      MaxAutoRetries=1，MaxAutoRetriesNextServer=1，      4 
  # NR NR
  #      MaxAutoRetries=2，MaxAutoRetriesNextServer=1，      6 
  # NRR NRR
  #      MaxAutoRetries=1，MaxAutoRetriesNextServer=2，      6 
  # NR NR NR
  #      MaxAutoRetries=2，MaxAutoRetriesNextServer=2，      9 
  # NRR NRR NRR
  OkToRetryOnAllOperations: true
  #         ，   0
  MaxAutoRetries: 1
  #         ，   1
  MaxAutoRetriesNextServer: 2