Anybody know which units are now in use nosql it ?

nosql market demand in the end what I'm up to now have not been exposed . . .
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I am currently in use reids
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looks like a lot in use , mongodb
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1 relational database technology sector have more in-depth understanding , can accurately determine a relational database is not suitable for their own data storage structure and size of company

2 store project data can get with a few companies excel .
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which areas of application ah ?
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top up strength in numbers
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The second point is not meant although the big project data structure is not complicated , however ?
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no one answered Results posted scattered points !
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I'm doing a framework to make full use of NoSQL databases , did not use mongodb, but with redis ( memory is cheap , the speed is very important ) , the purpose just to see how fast it
http://www.orchardcn.net
Now look pretty good speed , so I re-development of several complex data relationships module , see redis can not withstand .