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by onlypositive 1060 days ago
> So I added a second A record in CloudFlare for the blog to my home address, and again utilized the CloudFlare Proxy Services.

Is cloudflare detecting downtime via their proxy or something? I don't understand how you can pull the plug and have your VPS route not eventually fall over once cf's cache invalidates. Do browsers try both if one server fails?
1 comments
monstermunch 1060 days ago
Honestly I'm not 100% sure. Full A record failover is a paid feature which I don't pay for, but it seems like adding 2 A records does more than just round robin the DNS

If from a test machine I am loading the site via the VPS and I power it down, as soon as I refresh the page it ends up pointing home with zero downtime

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onlypositive 1060 days ago
I guess the proxy IP is the same. They must just run a single tunnel per hostname with multiple upstreams.

Nice find ;)

link