If 90% of the content doesn’t get daily attention then the spider can blow out the caches and cause inordinate costs.
https://fosstodon.org/@readthedocs/112877477202118215
A bunch of the traffic hit the origin.
I think they'll survive this massive DDOS of 76MBPS.
Same in the case of ReadTheDocs which was linked above, 10TB of traffic over 6 days, an incredible 19.29MBPS sustained. Has humanity even built technology powerful enough to handle this massive assault?!