First of all, mongodb itself does not support transactions. But you can
init a buffer to save  each row when  transaction begins, and save all the
buffered records to database  once  when  transaction completes.

C DINESH <dinesh.kitt...@gmail.com> 于2020年7月15日周三 上午9:28写道:

> Hello all,
>
> Can we implement TwoPhaseCommitProtocol for mongodb to get EXACTLY_ONCE
> semantics. Will there be any limitation for it?
>
>
> Thanks,
> Dinesh.
>

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