限制網站頻繁訪問

CREATE?TABLE?[dbo].[Zz_AccessIP](  ????[IP]?[nvarchar](50)?NOT?NULL,  ????[FirstDateTime]?[datetime]?NOT?NULL,  ????[LastDateTime]?[datetime]?NOT?NULL,  ????[Times]?[int]?NOT?NULL,  ?CONSTRAINT?[PK_Zz_AccessIP]?PRIMARY?KEY?CLUSTERED?  (  ????[IP]?ASC  )WITH?(PAD_INDEX??=?OFF,?STATISTICS_NORECOMPUTE??=?OFF,?IGNORE_DUP_KEY?=?OFF,?ALLOW_ROW_LOCKS??=?ON,?ALLOW_PAGE_LOCKS??=?ON)?ON?[PRIMARY]  )?ON?[PRIMARY]  ?  GO  ?  ALTER?TABLE?[dbo].[Zz_AccessIP]?ADD??CONSTRAINT?[DF_Zz_AccessIP_FirstDateTime]??default?(getdate())?FOR?[FirstDateTime]  GO  ?  ALTER?TABLE?[dbo].[Zz_AccessIP]?ADD??CONSTRAINT?[DF_Zz_AccessIP_LastDateTime]??DEFAULT?(getdate())?FOR?[LastDateTime]  GO  ?  ALTER?TABLE?[dbo].[Zz_AccessIP]?ADD??CONSTRAINT?[DF_Zz_AccessIP_Times]??DEFAULT?((0))?FOR?[Times]  GO