Abstract: A computer implemented method for recording data includes a first step of recording data of a predetermined first time-range in a block storage; and a second step of performing a batch operation of merging data in the block storage to record the generated block data in an object storage, if there is no data inflow for a predetermined second time-range or if the sum of the capacities of new blocks recorded in the block storage exceeds a predetermined capacity or the sum of the number of records exceeds a predetermined number of data. The block data recorded in the second step is data where the time range of a merged column is placed at the front and the data is merged based on a column name.