What are some examples of asynchronous programming in Ruby?

What are some examples of asynchronous programming in Ruby?

Asynchronous programming in Ruby can be achieved using libraries like EventMachine or Async. Would you like to see a specific example?

Yes, please show me an example using EventMachine.

Sure! Here's a simple example:

require 'eventmachine'

EM.run do
  EM.add_periodic_timer(1) do
    puts 'This prints every second!'
  end
end

This code uses EventMachine to print a message every second.

How does this work under the hood?

EventMachine uses an event loop to manage multiple tasks without blocking. It schedules events and callbacks, allowing for non-blocking I/O operations.

Can you provide another example using Async?

Absolutely! Here's a basic example using the Async gem:

require 'async'

Async do
  puts 'Starting async task...'
  sleep 2
  puts 'Task completed!'
end

This runs the task asynchronously, allowing other code to execute while waiting.