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OurAirports is coping well with the traffic from the AI bots (about 45K hits/hour), but since page views are database-intensive, I've future-proofed it by adding a Varnish cache in front.
Since it's a high view/low update site, I'm putting the AI bots to work seeding the cache for me. I've set a 6 hour maxage and a lot of fancy invalidation for updates (which I hope will work).
Logged in users will skip the cache, while the bots will stay busy seeding it for each-other.