better rolling mechanism for metrics
better rolling mechanism for metrics

wesley1001/commafeed,ebraminio/commafeed,Athou/commafeed,syshk/commafeed,ebraminio/commafeed,ebraminio/commafeed,Athou/commafeed,Athou/commafeed,Athou/commafeed,Hubcapp/commafeed,syshk/commafeed,zhangzuoqiang/commafeed,ahmadassaf/CommaFeed-RSS-Reader,RavenB/commafeed,syshk/commafeed,Hubcapp/commafeed,syshk/commafeed,ahmadassaf/CommaFeed-RSS-Reader,RavenB/commafeed,Hubcapp/commafeed,ebraminio/commafeed,RavenB/commafeed,Hubcapp/commafeed,RavenB/commafeed,zhangzuoqiang/commafeed,ahmadassaf/CommaFeed-RSS-Reader,zhangzuoqiang/commafeed,wesley1001/commafeed,ahmadassaf/CommaFeed-RSS-Reader,zhangzuoqiang/commafeed,wesley1001/commafeed,wesley1001/commafeed