Question

I have a rails 3 application and looked around in the internet for daemons but didnt found the right for me..

I want a daemon which fetches data permanently (exchange courses) from a web resource and saves it to the database..

like:

while true
  Model.update_attribte(:course, http::get.new("asdasd").response)
end

I’ve only seen cron like jobs, but they only run after a specific time… I want it permanently, depending on how long it takes to end the query…

Do you understand what i mean?

Answer 1

Finaly i found a cool solution for my problem:

I use the god gem -> http://god.rubyforge.org/

with a bash script (link) for starting / stopping a simple rake task (with an infinite loop in it).

Now it works fine and i have even some monitoring with god running that ensures that the rake task runs ok.