This gem allow you to use activerecord + mysql2 with fibers, the old em_mysql2 driver from the mysql2 gem was use as a foundation.
The "new" em_mysql2 driver lives in em-synchrony but it is far from prefect, instead of trying to keep the same behavior as the threaded version it just patch activerecord enough to make it work.
I don't pretend my implementation is perfect but at least I try to keep the same behavior.
This gem currently support 4.0.0
require 'rubygems'
require 'bundler/setup'
require 'active_record'
require 'em-mysql2'
ActiveRecord::Base.establish_connection(
adapter: 'em_mysql2',
database: 'test',
username: 'root',
pool: 2,
checkout_timeout: 30,
socket: '/tmp/mysql_ram.sock'
)
ActiveRecord::Base.logger = Logger.new($stdout)
COUNT = 5
started_at = Time.now
EM::run do
left = COUNT
COUNT.times do |n|
Fiber.new do
ActiveRecord::Base.connection_pool.with_connection do
ActiveRecord::Base.connection.execute("SELECT SLEEP(2)")
end
left -= 1
if left <= 0
EM::stop()
end
end.resume
end
end
elapsed = (Time.now - started_at)
puts "time: #{'%.2f' % elapsed} seconds"
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