![]() It allows you to write realtime features powered by WebSockets in the same style as the rest of your Rails applications.Ĭheck out the official Rails guide for detailed instructions on how to integrate ActionCable into your Rails application. How to integrate ActionCable in Rails applications?ĪctionCable is a full-stack offering that provides a client-side JavaScript framework and a server-side Ruby framework. Controlling what data gets broadcasted to clients is done via your Channel classes, which can invoke any business logic that may exist in your Rails app.Your load balancers must support WebSockets and keep persistent connections open between your visitors and one of the ActionCable servers. Client-side connections to the server are made using WebSockets.If you mount it as a standalone app, then you will need to think about how you handle authentication given it will be on a different port or domain potentially. The ActionCable server runs as a separate Rack server, however, it can be mounted inside your app or as a standalone application.The unit of message distribution is a pub/sub stream, every message published is done via a stream broadcast in ActionCable.Every stream uses a separate Redis channel, which is a good thing. publishing to Redis will result in messages being delivered to all servers. This allows more than one Rails server to share state i.e. Pub/Sub streams are powered by Redis’ Pub/Sub feature.I hope this article helps developers understand when ActionCable is and is not suitable, and why an alternative serverless WebSocket solution should be considered.īefore we dive into what ActionCable is capable of, I think it’s important that readers understand at a high level how ActionCable works: High level ActionCable architecture diagram My intention is not to bash ActionCable, but simply to cover its strengths and shortfalls. As such, when reviewing ActionCable, I was specifically interested to see how the Rails team has tackled the many realtime messaging issues we have solved over the last years building Ably. Please note that I am the co-founder of Ably. ![]() While ActionCable is a substantial move forward for the Rails platform, I think developers need to understand the strengths and weaknesses of Rails ActionCable before rolling it out into production environments. Event-driven and low-latency, WebSockets are an excellent choice for use cases like live chat, alerts & notifications, and realtime data broadcast. ActionCable allows developers to move away from the typical request/response paradigm of old to one where persistent WebSocket connections are maintained from clients to your Rails servers. ![]()
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |