Maybe you want an Agent.

On Jun 20, 2014, at 12:10 PM, Hussein B. <hubaghd...@gmail.com> wrote:

> Hi,
> 
> I have a ref that saves the ID of last processed event.
> 
> Of course, I'm using Clojure STM facility. The problem now is I can't control 
> the value of the ref. Due massive concurrency, it is updated and my logic is 
> broken.
> 
> How to guard, and really guard the update of that ref?
> 
> Should I do (locking) ?
> 
> Thanks for help and time.
> 
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