What is the simple principle of LokiJS? How many restrictions can be placed on the number of mobile phones it can use?

What is the simple principle of

LokiJS?
are there any restrictions on the use of memory on mobile phones

Jul.06,2021
MySQL Query : SELECT * FROM `codeshelper`.`v9_news` WHERE status=99 AND catid='6' ORDER BY rand() LIMIT 5
MySQL Error : Disk full (/tmp/#sql-temptable-64f5-1b3c480-346af.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3c480-346af.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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