Service
MemoryMutiThreadInteractionWithDB
获取当前时间点数据
DataBase
IsCacheDataReady
Input_ShowingMemoryDataWithBackupMemoryData_Then_Clear_BackupMemoryData
可以获取当前时间点数据
Get_CacheData_To_Next_ShowRange_Memory_From_DB
IsGetDataOK
GetCacheData
Begin_Get_CacheData_To_Cache_Data_From_DB_Then_Fill_Showing_Data