Lock Manager

The lockManager interface provides in memory locking services via the following methods:

• lock(), locks a specified resource id so that it can't be accessed by another user
• unlock(), unlocks a resource id so that it can be accessed by another user

// check if a lock has been taken out
if(system.lockManager.lock("exam_answers", "exam_id")){
  // do something

  // unlock resource once finished
  system.lockManager.unlock("exam_answers", "exam_id"); 
}