Why is lock called offline in PoEAA?

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protalk2018-03-02 11:15:12

Programming

protalk, 2018-03-02 11:15:12

Why is lock called offline in PoEAA?

I recently re-read Fowler's excellent "Patterns of Enterprise Application Architecture". Namely, chapter 16 "Offline Concurrency Patterns". Wondering why the author of this chapter, David Rice, writes "offline lock"? In no other place have I come across the use of "offline" in the context of locking. But if there is an "offline lock", then probably there should be an "online lock" as well?
Actually the question is, no one knows why this offline is used?

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