EventMachine - how can you tell if you are behind?

Question

I am studying using rubygem twitter-stream with EventMachine to track and record tweets. I’m kind of new to everything that happens in programming. How can I determine if any processing that I do in my event loop will affect it? Is there an easy way to check?

Answer 1

EventMachine has a method EventMachine::Queue.sizethat allows you to look into the current queue and get an idea of ​​how big it is.

add_periodic_timer()In this case, you can also get the size of the queue and print it.

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Answer 2

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@last = Time.now.to_f
EM.add_periodic_timer(1) do
  puts "LATENCY: #{Time.now.to_f - @last}"
  @last = Time.now.to_f
end