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It's not magic. I've personally removed dozens of N+1 queries from code written by one of my fellow consultants caused by misuse of Entity Framework. Here's a reference: https://msdn.microsoft.com/en-us/library/jj574232(v=vs.113)....

At least with EF it's possible to completely disable lazy loading. I always recommend doing so -- when you're passing entities between methods it's pretty easy to lose track of what's implicitly 'loaded' on the object. Innocent changes to a method that operates on an entity can cause a database round trip...horrible idea.

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