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Added a note about long-running processes.

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Aymeric Augustin 2013-03-07 23:06:58 +01:00
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commit 189fb4e294
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docs/topics/db/transactions.txt
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@ -164,6 +164,13 @@ Django provides a single API to control database transactions.
- releases or rolls back to the savepoint when exiting an inner block; - releases or rolls back to the savepoint when exiting an inner block;
- commits or rolls back the transaction when exiting the outermost block. - commits or rolls back the transaction when exiting the outermost block.
.. admonition:: Performance considerations
Open transactions have a performance cost for your database server. To
minimize this overhead, keep your transactions as short as possible. This
is especially important of you're using :func:`atomic` in long-running
processes, outside of Django's request / response cycle.
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