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Mocks are a handy tool for ...
Setup your development environment.
Configure your production server.
Learn how to modify production to run websockets.
In this series, we're building a clone of Slack using Rails 5 and ActionCable
Sending chat messages from the browser to the server with ActionCable
Adding browser notifications for new messages with the Notifications and Page Visiblity APIs
Tracking unread messages in chat so that we can provide a nice user experience for our users