WebSockets和Heroku：将数据推送给用户

Question

I am build a real time web application using Ruby on Rails and Heroku seems to be the best option for hosting it.

I would prefer pushing new data to the user, when it becomes available, instead of pulling it by sending AJAX requests every few seconds.

Pusher seems to be suggested by Heroku for a such kind of job, but it has some limitations, brings additional costs, and makes you dependent on an external API.

Is there any other option to use WebSockets on Heroku?

Answer 1

如果您只需要单向通信，请尝试使用服务器端事件。

Answer 2

There are two options that you can use with Heroku aside from Pusher:

1) Like Eric Fode mentioned above, you could use SSE given you don't need two-way communication. There is a Heroku add-on which you could leverage for this: https://addons.heroku.com/eshq

2) There is another lesser known library called Faye which you could look into. It supports both Node.js and Ruby servers and it's based on the Bayeux Protocol

Answer 3

Heroku现在支持WebSockets： https ： //devcenter.heroku.com/articles/heroku-labs-websockets

Answer 4

If you wanna do websockets you need to use a different server besides rails. And since your on heroku you don't have the flexibility.

Optionally you can host a websockets enabled node server on an ec2 micro instance. Then in your rails app when you want to push -- do a request to the node server and the it will go to the clients.

Answer 5

虽然目前不支持WebSockets， 显然你可以在Heroku上使用Socket.io ，将其配置为长轮询。