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  3. Fast JSON APIs in Rails with Key-Based Caches and ActiveModel::Serializers

  4. Extending Rails.vim with Custom Commands

  5. New screencast: Improving Performance for Real-time Requests

  6. Strong Parameters As Documentation

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  8. Ruby Science: Inheritance, Composition, STI, and Polymorphic Associations

  9. Handle incoming email with Griddler

  10. Ruby Science: Avoid Divergent Change and Use Convention Over Configuration