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require 'eventmachine'
require 'mysql2/em'
EM.run do
client1 = Mysql2::EM::Client.new
defer1 = client1.query "SELECT sleep(3) as first_query"
defer1.callback do |result|
puts "Result: #{result.to_a.inspect}"
end
client2 = Mysql2::EM::Client.new
defer2 = client2.query "SELECT sleep(1) second_query"
defer2.callback do |result|
puts "Result: #{result.to_a.inspect}"
end
end