python - How to use Django-nonrel's MongoDB mapreduce? -
i'm learning how use mapreduce , reading documentation: http://django-mongodb.org/topics/mapreduce.html
but says: mongodbâs map/reduce designed one-time operations, i.e. itâs not intended used in code executed on regular basis (views, business logic, ...).
my question right now: use it? there recommendations or something? can't find it.
thanks lot!
it's difficult predict how long mapreduce functions take (assuming have large data), they're bad choice doing processing required generate web page view many users use.
it's useful doing data analysis on data, you're willing wait result. it's useful operating on large sets of data, processes updating every document in database.
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