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You've already given the answer: by tracking the date of change of objects and comparing it to the age of the data that other changes try to update. Do you want to know something else, e.g. how to do it efficiently?Kilian Foth– Kilian Foth2014-11-25 10:16:23 +00:00Commented Nov 25, 2014 at 10:16
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@KilianFoth - I've added some info about what I'd particularly like to knowpaj28– paj282014-11-25 10:19:19 +00:00Commented Nov 25, 2014 at 10:19
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1Your question is in no way special to web applications, desktop applications can have exactly the same problem. The typical solution strategies are described here: stackoverflow.com/questions/129329/…Doc Brown– Doc Brown2014-11-25 11:43:06 +00:00Commented Nov 25, 2014 at 11:43
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2FYI, the form of locking you mention in your question is known as "optimistic concurrency control"TehShrike– TehShrike2014-11-25 19:50:44 +00:00Commented Nov 25, 2014 at 19:50
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Some discussion related to Django herepaj28– paj282014-11-26 13:29:53 +00:00Commented Nov 26, 2014 at 13:29
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