Adam, now that somebody ( Marc Weber ) is working on an application ( payment gateway ) where the transaction model of Ur/Web does not cleanly apply, is there a chance of you generalizing Ur/Web transactions in a safe, principled way ( that allows representing the semantics of the application's effectful operations within Ur/Web )? For example, I think that the problem of leaving a permanent record of an event ( e.g. receiving an order and not removing it on failure rollback ) could be handled with a SAGA that has a null compensation for the process of writing the record.
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