Social voting on Google App Engine -


i have app users can upvote or downvote blog post. implement voting functionality, created below model ... 

 class upvote(ndb.model):    user_id = ndb.integerproperty(required=true)    blog_id = ndb.integerproperty(required=true)

when user upvotes post, save via:

upvote(user_id=user.key.id(), blog_id=blog.key.id()).put()

and see if user has upvoted query: 

upvote.query(upvote.user_id=user.key.id(), upvote.blog_id=blog.key.id())

is efficient way implement such voting system? want make sure seems upvote model can large. of course prematurely optimizing in theoretical situation millions of users want efficient/cheapest method.

well, 1 i'd call model vote , i'd add booleanproperty called upvote, set true if it's upvote , set false if it's downvote.

otherwise you'd have repeat story downvotes , without logic you'd leave room user cast 2 votes, 1 , 1 down, same post, imho doesn't make lot of sense.

yes, there many vote entities, small , not related each-other, scaling pretty good.


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