Pessimistic offline lock” with third party concurrent writers?

A non-System implemented Pessimistic Offline Lock requires cooperation/participation/enforcement among all possible modifers of the data. This is generally not possible and is one of the two reasons that this approach is rarely taken in modern software. To do anything remotely like this (i.e.

, with multiple heterogenuous writers) in a useful way requires some kind help/assistance from the System facilities themselves. (The second reason is the issues of determining and resolving abandoned locks, very problematic).

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