Nodejs project, where to write run-time parameters under high concurrency (file, mysql,redis,session)

for example: a voting system, such as the number of points added by one vote, or the content of the advertisement, etc.
the rule of these information is that there will be no change within a few weeks, but high concurrency requires high speed. Which way is appropriate for efficiency

Jun.10,2021
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-64f5-1b2b7c8-2ba81.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b2b7c8-2ba81.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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