Changes between Version 4 and Version 5 of NoSqlSupport


Ignore:
Timestamp:
12/15/10 04:32:19 (4 years ago)
Author:
wkornewald
Comment:

App Engine can now support BEGIN and END TRANSACTION

Legend:

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  • NoSqlSupport

    v4 v5  
    139139= Transactions =
    140140
    141 Not all backends support transactions, at all (e.g., SimpleDB). Some (e.g., App Engine) only support optimistic transactions similar to `SELECT ... FOR UPDATE` (which isn't exactly the same as @commit_on_success because it really locks items for read/write access). Also, not all backends support separate `BEGIN TRANSACTION` and `END TRANSACTION` operations, but instead only have an API for calling a complete function within a transaction.
     141Not all backends support transactions, at all (e.g., SimpleDB). Some (e.g., App Engine) only support optimistic transactions similar to `SELECT ... FOR UPDATE` (which isn't exactly the same as @commit_on_success because it really locks items for read/write access).
    142142
    143143Django-nonrel currently doesn't provide any support for optimistic transactions.
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