hmm I have been downvoted but I deserve it. So to rephrase what I do the problem is a you say not losing data that is going to be inserted but performing operat

hmm I have been downvoted but I deserve it. So to rephrase what I do the problem is a you say not losing data that is going to be inserted but performing operations with the wrong type of data which mean errors. Let's say I have 3 pieces of data required by a function to compute the outcome of a certain operation (withdraw 10 billion dollars): A B C. We change the data in that fashion: A -> A' B -> B' C -> C' -> C" When I query, because of eventual consistency the f(A,B,C) may very well be: f(A,B,C), f(A,B',C), f(A,B,C'), f(A,B,C"), ... so on. It is simple when you have 3 sources, but when you have 50, and then when the operation use 50 or those f, depending on 50 other pieces of data ? Anyway, again sorry for my poor explanation of the issue!