This document discusses using MySQL locks at the application level with MoFedge to prevent bad flows like double submissions. It recommends using the Mysql::NameLocker module to lock a session ID during validation and unlock it after dispatch by calling GET_LOCK() and RELEASE_LOCK() on the database handle. Examples are provided of how to initialize and unset the locker in the valid_add and post_dispatch_add subroutines. More information is available in the CVS repository and SourceForge link provided.

1. Application Level Lock by MySQL with MoFedge. Tokuhiro Matsuno 2007-01-26(Fri) 社内勉強会

2. Bad Flow Validation Add Validation Add Session1 Session2 DB DOUBLE!

4. Good Flow Validation Add Redirect Session1 Session2 DB Lock Lock another page