Awesome

ost(1)

Lets you define and run Ost workers.

Usage

Assuming a simple worker:

class Mailer
  def call(item)
    puts "Emailing #{item}..."

    # Actually do it.
  end
end

Declare it in a file named Ostfile at the root of your project:

require "app"

Ost.run(Mailer)

From the command line:

$ ost start

Enqueue some items and see it running:

$ redis-cli lpush ost:Mailer foo bar baz

Once you're up and running, deploy your workers using -d for daemonization:

$ ost start -d

You can stop the worker pool by issuing the stop command:

$ ost stop

This will wait for all workers to exit gracefully.

For more information, run:

$ ost -h

Design notes

ost(1) assumes that your workers perform a fair amount of I/O (probably one of the most common reasons to send jobs to the background). We will optimize ost(1) for this use case.

Currently, ost(1) runs multiple threads per worker. However, we may fork(2) if we find that's better for multiple-core utilization under MRI.

See also

Ost::Worker.

Support

Since we may use fork(2), ost(1) only supports MRI for now.