=============== Oct 22, 2020 (KST) ===============
18:35:38.624923 log@legend F·NumFile S·FileSize N·Entry C·BadEntry B·BadBlock Ke·KeyError D·DroppedEntry L·Level Q·SeqNum T·TimeElapsed
18:35:38.641121 db@open opening
18:35:38.641557 version@stat F·[] S·0B[] Sc·[]
18:35:38.657863 db@janitor F·2 G·0
18:35:38.657897 db@open done T·16.750123ms
18:35:48.720874 db@close closing
18:35:48.721268 db@close done T·392.847µs
