I can't speak the the edge stuff they are doing, but the routing closer to the data centers was unique to the way they do things. In a way that wouldn't be generally usable.
Not every application can put enough context in the request to make it work the way Google is working. Sort of app request context based routing.
Also, they have the advantage that a lot of their apps are like search, in that no consistency is needed. Five consecutive searches for "some query" can return different results each time, with no adverse effects.
That creates a lot of flexibility in routing requests to destinations.
Not every application can put enough context in the request to make it work the way Google is working. Sort of app request context based routing.
Also, they have the advantage that a lot of their apps are like search, in that no consistency is needed. Five consecutive searches for "some query" can return different results each time, with no adverse effects.
That creates a lot of flexibility in routing requests to destinations.