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Test Driven Development, or...
Setup your development environment.
Configure your production server.
Learn how to modify production to run websockets.
Learn how to use the Facebook API and refresh auth tokens using the Koala gem
Geolocate addresses using the geocoder gem and then use it to search your database by location
Learn how to add Facebook login via OAuth using Omniauth
Learn how to analyze and understand the Ruby stacktrace when something goes wrong in your app
Tracking business metrics can be time consuming and costly but the Ahoy gem lets you easily track metrics and Blazer makes it incredibly easy to analyze your data
Track users and the actions they take in your Rails app and then send them over to various 3rd party services using Segment
Add various types of charts to your Rails app with Chartkick and use Groupdate to make easy group queries in SQL
Feature flags enable us to turn on features for specific users, groups, and random percentages of our user base to test features before fully rolling them out
See how to add global autocomplete and search functionality to your app's navbar
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