Learn to use custom error pages to provide a similar look to your application. Get notified on Slack as errors occur to act on them before they're reported.

Using the Google Maps Javascript API, learn how to plot markers onto a map. Load markers and info windows through AJAX calls to your Rails JSON API.

Using the Geocoder gem and Google APIs, learn how to add some geolocation functionality to your application.

Save expensive calculation time using Rack::Attack, we will learn how to limit requests coming into our application. This gem not only limits requests, but can be used to blacklist or whitelist users as well.

Using the knock gem, we will add JWT Authentication to our Rails API Application.