I don't think the EMU needs (right now) anything as complex as transactions, since, as Hogie stated, all the operations are single read or writes. Locking could be a concern for scalability, but I think other things such as processor power, memory usage, and bandwidth are more limiting that a process having to wait a couple ms. for a lock to be realesed. But I could be wrong... has anyone experienced any problems with MySQL locking tables or have any numbers showing it's slowing things down?
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