ruby http带有观察模式的静态Web服务器？

Question

Is there a ruby http server (like httpd) for static web sites with a watch mode that updates the browser?

Currently if the website is running in httpd I have to refresh the browser after file changes.

Answer 1

Ruby on Rails has ActionCable which uses websockets to keep a browser up to date using a publish/subscribe method.

Edit : Faye-websocket is a websocket implementation that doesn't require any framework, just a Rack-compliant web server.

Depending on your needs there may be pre-built application available. For example, if you want a dashboard with widgets that update live, you can use Smashing .

Answer 2

In addition to Mark's answer, iodine is a Ruby HTTP and Websocket server written in C.

It sports a basic static file service as well as native support for Websocket connections (using a websocket callback object).

The static file service doesn't even require a Ruby application. ie:

 $  iodine -www ./

Iodine also supports pub/sub (with or without Redis) out of the box, moving a lot of the workload out of the Ruby layer and into the C engine.

It's possible to run iodine in single threaded mode (due to it's evented design), though the current default will use as many threads and processes as there are cores on the machine (which prefers concurrency over performance).

When using Rails, iodine can be used instead of ActionCable by catching Websocket connections using middleware (either custom made or, for example, the Plezi gem ).

I'm biased, being the author, but I think it's an easy solution to implement and my tests show that it's significantly more performant.