How would you run code once per second on Heroku?

Heroku supports background workers and cron (daily, hourly) but I'm looking for a way to run code once a second.

Le开发者_Go百科t's say I have a game backend on Heroku and want to timeout some player action after some time.

How would you solve for this?

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You should try rufus scheduler:

Install the gem

 gem install rufus-scheduler

Make sure you include the gem in bundler or however you are including it.

Then you need to create a file called task_scheduler.rb and stick this in you initializers directory.

 require 'rufus/scheduler'
 scheduler = Rufus::Scheduler.start_new

 scheduler.every '1s' do

      puts "Test!"      
      #do something here

 end

If you have any trouble you can see this blog post:

http://intridea.com/2009/2/13/dead-simple-task-scheduling-in-rails?blog=company

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Some Javascript polling might be an alternative to a Heroku worker that runs some code every second. Something that performs an AJAX call after a given period of time.

Running a Heroku worker to run some code every second doesn't seem hugely cost effective or efficient.

Off the top of my head, perhaps:

var codeToRun = function(){
    $.ajax({
          url: '/test',
          success: function(){
            alert('Code was run.');
          }
    )};
}

timer = window.setInterval(codeToRun,1000);