Chapter 16. Set Up Isolation Levels

16.1. About Isolation Levels

Isolation levels determine when readers can view a concurrent write. READ_COMMITTED and REPEATABLE_READ are the two isolation modes offered in Red Hat JBoss Data Grid.
  • READ_COMMITTED. This isolation level is applicable to a wide variety of requirements. This is the default value in Remote Client-Server and Library modes.


    The only valid value for locks in Remote Client-Server mode is the default READ_COMMITTED value. The value explicitly specified with the isolation value is ignored.
    If the locking element is not present in the configuration, the default isolation value is READ_COMMITTED.
For isolation mode configuration examples in JBoss Data Grid, see the lock striping configuration samples: