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What are some interesting things to do with anycast?
OpaqueRegistrant
Member
in General
As the title says. A few providers offer anycast and I want to do something cool with it, but apart from DNS or a basic web server I don't really have any ideas. Does anyone else?
I know one thing you can do is watch ping reply routing to detect if someone else is using anycast. But that doesn't seem that interesting. We mostly know who's using it.
Thanked by 1oloke
Comments
Experiment with QUIC connection migration.
I would imagine anycast will be very useful anywhere where you need a fail-over approach like file storage, CDN etc.
No, provider-level anycast generally can't withdraw an individual IP from a location just because that server is down.
That is true but what they (providers that allow you to announce your anycast address to their routers via BGP, e.g., Rage4 and BuyVM) often do is route it internally across their locations.
While not as good as having full control of the entire prefix announcement, traffic will still hit any of your machines that still advertise the anycast address effectively giving you a form of fail-over.