java - What are the best practices for the Middleware API? -

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we developing middleware sdk, both in c++ , java used library/dll by, example, game developers, animation software developers, avatar developers enhance products.

what know this: there standard "best practices" development of these types of api?

i thinking in terms of usability, readability, efficiency etc.

my 2 favourite resources on subject: http://mollyrocket.com/873 , http://video.google.com/videoplay?docid=-3733345136856180693


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