From: Voice of the Blind ™ Network Operation <noc () vobradio org>
Hello, is a anycasted Prefix a good idea for Streaming?
Maybe. I've used TCP anycast-based CDNs (CacheFly and MaxCDN/NetDNA), and they work very well. I observe they generally work something like this: 1. DNS resolution with long TTLs returning anycasted IPs. 2. Smaller HTTP requests served directly from anycast IP with http keepalives enabled. 3. Large objects and streams do an application layer redirect (HTTP or whatever stream protocol) to a DNS name that returns unicast IPs for the node you initially reached via anycast. I would recommend looking at CDNs however, as this is an area where scale does matter and you will find it very difficult to do this better or cheaper yourself.