Action cable
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ActionCable is Rails 5's new framework for building real-time features through websockets. It allows for two-way communication channels between clients and servers. Key components include Puma and Redis to handle connections and publish/subscribe, and Channels which connect websocket streams to publish messages. ActionCable can power features like chat, feeds, and collaborative software that require real-time updates through JSON-encoded requests and responses.
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Action cable
- 1. ActionCable What’s the big deal?
- 2. What is ActionCable? Framework for real-time communication Integrates websockets with the rest of your Rails application Full stack offering with client side JS & server side Ruby It’s Rails 5 new hotness
- 3. Why Does ActionCable Exist? Demand for push notifications & real-time features Lack of out-of-box support for websockets Because Basecamp
- 4. The Moving Parts / What You Need To Know Puma Redis Websockets Channels Cable
- 5. Puma Modern concurrent webserver Designed for parallelism & speed Handles the incoming and outgoing connections
- 6. Redis Data structure server Stores data in memory for fast read/write ActionCable leverages PubSub feature
- 7. Websockets Full duplex connections over single TCP connection Simultaneous upstream and downstream connections The special sauce behind push notifications & real-time features Rails 5 - now with websockets!
- 8. Channels This is where the PubSub magic happens Channels are the publisher Connections are the subscriber Channels will connect the websocket’s stream
- 9. Blah Blah Blah...Why The Hell Does This All Matter!??!?!?!??!? It’s more than just new hotness It’s the future of streaming websockets in Rails It will fill the void for real-time features that has been lacking in Rails
- 10. What Can I Do With It? Anything that requires a real-time stream Chat Feeds API calls Financial data Collaborative software Anything that requires JSON encoded requests