Ah no, these aren't transactions in the sense of locking and multiple client access. My glib answer is that there's perk to JavaScript not being multithreaded!

Ah no, these aren't transactions in the sense of locking and multiple client access. My glib answer is that there's perk to JavaScript not being multithreaded! But seriously, when persisting/saving a Store, the library doesn't guarantee that you aren't saving over something another browser window might have just written. I would need to think about what that would entail.