ruby on rails - Creating DBs on the fly for all my users -

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i'm building rails app in i'd provide every user each own database work with. @ moment i'm thinking simpledb due compatibility json, low maintenance, , compatibility aws. however, did notice aws caps users @ 250 simpledb domains may problematic. anyway, i've never created application required dynamic databases scoped users , wondering if aware of design patterns/gems/databases meant address common pitfalls regarding application design.


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