[erlang-questions] simulate a transaction

[Daniil Churikov]

Also in certain situations at first glance you think that you need 
transactions, but you can:
  a) scratch your data model to place more information into single object 
(depends on how you fetch your data, denormalization is your friend)
  b) some data schemes with additional design could eventually heal them 
selfs in case of previous errors (e.g on next write previous rubbish 
cleaned up from data)
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