Run RepositoryArchiveCacheWorker on interval

We should reduce the amount of times the RepositoryArchiveCacheWorker runs. Is it necessary for it to run each time an archive is requested? One large customer averages 750 (visual guess) of these workers per hour. That's ridiculous. The worker only does a find for old items in the tmp directory and deletes them. Can we run this once per hour on a cron or something?