Note this data many no longer be correct. I just checked and numbers for some of the websites are much longer now: raw.githubusercontent.com has 1 hour TTL. gi

Note this data many no longer be correct. I just checked and numbers for some of the websites are much longer now: raw.githubusercontent.com has 1 hour TTL. github.map.fastly.net is 5 minutes TTL. detectportal.firefox.com is 60/120 seconds TTL. Another thing missing from the post is exactly _how_ bad is it -- because latency matters. If there is a choice of 30mS extra latency on initial site visit vs a chance of 1 hour of downtime in case of hardware failure, it is not clear what the best choice is. Especially things like detectportal.firefox.com which are asynchronous and normally do not introduce extra user-visible latency at all.