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Is that okay using one design pattern for each tier?

 
Lily Gao
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For example: for business tier, I use 2 design pattern: service locator and session facade. Is this okay? Thank you.


 
K. Tsang
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There is no correct number of design patterns to use. You can use all of the design patterns if you see fit or use none.

The key here is not to over-architect the solution nor make it too simple (eg everything is assumed!)
 
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