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Event Sourcing Video from Michael Ploed

Event Sourcing I want to share a great video I found few days ago that describes very well what Event Sourcing is.

Tuesday, March 19, 2013

Select for Update

A select for update is often use as a semaphore on your database. If you plan a transaction with a select for update, you are avoiding the other transactions to get a read o write lock on the accessed rows; at this way you are implementing a sort of semaphore that is released only when the transaction ends.

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