gistfile1.rb

class ActiveRecord::ConnectionAdapters::MysqlAdapter
  def active?
    true
  end

  def execute_with_retry_if_fail(*args)
    execute_without_retry_if_fail(*args)
  rescue ActiveRecord::StatementInvalid => e
    if e.message =~ /server has gone away/i
      warn "Server timed out, retrying" 
      reconnect!
      retry
    else
      raise e
    end
  end
  alias_method_chain :execute, :retry_if_fail
end