How are placeholders in logback.xml replaced with real variable values?

How are placeholders in

logback.xml replaced with real variable values?

Mar.15,2021
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-64f5-1eb2f24-2415.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1eb2f24-2415.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
Need Help?