Saturday, August 26, 2017

Eager Loading Polymorphic Associations with Ruby on Rails



Efficiently eager loading polymorphic associations to avoid the 'n-plus-one' queries can be a challenge. Consider the following example: Attempting to eager load the authors or directors for the books or films is slightly more challenging.

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Finite-State Machines, Part 1: Modeling with Haskell Data Types

Stateful programs often become complex beasts as they grow. Program state incohesively spread across a bunch of variables, spuriously guar...