> I am new to using cassandra. In the documentation I have read, understand, > that as in other non-documentary databases, to update the value of a > key-value tuple, this new value is stored with a timestamp different but > without entirely losing the old value. > I wonder, as I can restore the historic values that have had a particular > field.
You can't. Upon update, the old value is lost. >From a technical standpoint, it is true that this old value is not deleted (from disk) right away, but it is deleted eventually by compaction (and you don't really control when the compactions occur). -- Sylvain
