| Since the Amazon outage, I've been wondering about the best way to quickly switch to another host. This is exact problem we (Cedexis) solve. Assume your site is www.website.com, in general points to an A record or a CNAME to a datacenter/ cloud/ CDN. We add an intermediate hostname, low TTL (20 seconds), global anycast network, which can be scripted (write your load-balancing logic in php) to handout a CNAME (one of many) based on performance (RTT), load, cost, anything else you can think of, etc. Re.: AWS's recent outage, assuming you are running your apps in multiple zones/ regions/ clouds, we would have noticed the latency and automatically routed away to a different zone/ region/ cloud. We collect hundreds of millions of performance measurements daily: http://gigaom.com/cloud/heres-what-amazon-outage-looked-like... Drop an email and I am happy to explain more and setup folks from HN with a free account: prakash at cedexis.com |