Spring-transaction - Related information

• Does spring declarative transaction provide the implementation of pessimistic lock and optimistic lock?

  problem description I have read a lot of articles on the Internet, and they all say that optimistic locks are generally the way to add version fields and use CAS. However, we all know that it is very troublesome to implement this solution in a project...

  Spring-transaction java

  Jul.20,2021
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-64f5-1b3f5d1-2bc03.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
MySQL Errno : 1021
Message : Disk full (/tmp/#sql-temptable-64f5-1b3f5d1-2bc03.MAI); waiting for someone to free some space... (errno: 28 "No space left on device")
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