JPA: pattern for handling OptimisticLockException

Question

what is the correct pattern for handling OLE in a (REST) web service? this is what i\'m doing now, for example,

protected void doDelete(HttpServletRequest re         


        

Answer 1

The "politically correct" answer in rest, is to return an HTTP 409 (Conflict) witch matches perfectly with the idea of optimistic locking. Your client should manage it, probably by retring a few seconds later.

I wouldn't add the logic to retry in your app, as your client will already handle situations when you return a 40X code.