The visit expires 30 minutes after the visitor lands. The expiration isn't generic. It's an interesting idea. We have multiple servers under the load balancers

The visit expires 30 minutes after the visitor lands. The expiration isn't generic. It's an interesting idea. We have multiple servers under the load balancers, so we'd be able to store them in Redis, but that is no better than permanent storage, since Redis could still be breached and you'd see it with ease.