Sunday, April 10, 2011

WebSphere eXtreme Scale Write-Behind Considerations

Transacation mangament -
For write behind, the transaction management is decoupled between the ObjectGrid and the database with the ObjectGrid finishes before the database. Otherwise, without the wirte behind enabled, the ObjectGrid transation encloses the database transations.

Referential integrity constraints -
The backing map configured with write behind can have concurrent threads updating database backends. Therefore, when designing database referrential contraints, out-of-order updates should be allowed.

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