+1 for EM + bluepill
+++ lib/trend_muncher.rb +++
EventMachine::PeriodicTimer.new(5) do
queue = check_whether_there_is_something_new_in_the_queue
while queue > 0
logger.info "Munching #{queue.size} trends"
Trends.create(:data => queue.data)
end
end
+++ config/muncher.pill +++
RAILS_ROOT = File.expand_path("#{File.dirname(__FILE__)}/..") unless
defined?(RAILS_ROOT)
Bluepill.application("MuncherEnvironment") do |app|
app.working_dir = RAILS_ROOT
app.process("TrendMuncherDaemon") do |process|
process.start_command = "ruby lib/trend_muncher.rb"
process.stop_command = "kill -INT {{PID}}"
process.pid_file = RAILS_ROOT + "/tmp/pids/trend_muncher.pid"
process.stdout = RAILS_ROOT + "/log/muncher.log"
process.daemonize = true
process.checks :flapping, :times => 2, :within =>
30.seconds, :retry_in => 60.seconds
process.checks :mem_usage, :every => 10.seconds, :below =>
150.megabytes, :times => [3,5]
end
end
and then...
`sudo bluepill load config/muncher.pill`
Good luck!
On Oct 13, 10:42 am, Joshua Partogi <[email protected]> wrote:
> Hi all,
>
> I have another noobie question. After looking at last night
> presentation about Rails 3, I am wondering where do we put piece of
> code that runs on a separate thread for a long time every 5 seconds?
> e.g
>
> Thread.new do
> while true
> queue = check_whether_there_is_something_new_in_the_queue
>
> while queue > 0
> Trends.create(:data => queue.data)
> end
>
> sleep 5
> end
> end
>
> 1. I don't really like using cron to call `script/rails runner` as
> that will load the whole rails library which will choke the server
> because this process is run every 5 seconds.
> 2. I don't know about resque (which was mentioned by Ryan) yet, but
> since resque is a separate webapp, would resque know anything about
> the models in my Rails app?
>
> Any input is highly appreciated.
>
> Kind regards,
> Josh
>
> --http://twitter.com/scrum8
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