Notifications are flooding our logs with 200 HTTP messages, use this or similar technique to silence it completely. This should be a YAML setting and it should be disabled by default, but user should be able to enable it via config flag and restart on demand:

https://archive.dennisreimann.de/blog/silencing-the-rails-log-on-a-per-action-basis/

[app|I] Started GET "/notification_recipients" for 127.0.0.1 at 2017-05-15 10:02:50 +0200
[app|I] Processing by NotificationRecipientsController#index as JSON
[app|I] Current user: admin (administrator)
[app|D] Setting current user thread-local variable to admin
[notifications|D] Cache Hit: notification, reading cache for notification-3
[app|D] Body: {"notifications":[{"id":17,"seen":false,"level":"info","text":"somehost-265776 has been deleted successfully","created_at":"2017-05-15T06:44:26.196Z","group":"Hosts","actions":{}}]}
[app|I] Completed 200 OK in 3ms (Views: 0.1ms | ActiveRecord: 0.2ms)