# File lib/delayed/backend/base.rb, line 24
        def reserve(worker, max_run_time = Worker.max_run_time)
          # We get up to 5 jobs from the db. In case we cannot get exclusive access to a job we try the next.
          # this leads to a more even distribution of jobs across the worker processes
          find_available(worker.name, worker.read_ahead, max_run_time).detect do |job|
            job.lock_exclusively!(max_run_time, worker.name)
          end
        end