Hi, even if Google is serving data from single datacenter, it can be still faster to deliver data from app hosted at Google then from your own server.
The reason is that Google has edge servers (proxies) in many datacenters around the world. These servers have good connectivity to Google Datacenters via either public networks or via their private backbone. When you resolve any google domain to IP, Google will provide you with local Google proxy that will forward the request to Google datacenters. This is much often faster then routing requests via public networks directly to Google Datacenters, and more then that it is more reliable as proxies maintain visibility maps from their proxies to datacenters, thus problems with routing on the public Internet affect Google services less. I suppose that this affects GAE hosted applications as well. Even if Google's edge proxies doesn't cache anything, they do improve speed of access to Google infrastructure. My point of view is not official, and expresses external observer's point of view. Regards, m. On Tue, Mar 10, 2009 at 16:17, Steve Robillard <[email protected]>wrote: > I am working on a blog article on GAE and using it as a CDN per the yslow > suggestions. I have a few questions I would like to verify. > > 1) Is this data geographically dispersed and served from a location closest > to the user? I thought that it was, but saw a recent post stating that all > datastor operations were done from a single datacenter. > > 2) Assuming that #1 is true is their a way to seed these edge location > caches before the first request? > > 3) The new quotas will allow serving a file of 10mb's but only allow > serving 1 Gb of data per day. > > Thanks, > > For your help. > > Steve Robillard > > > Steve Robillard > CIO, SR-PS, Inc. > 8 Elm Court > East Haven, CT 06512 > (203) 500-1027 > www.sr-ps.com > > > > > > -- ..................................................................................................... Myroslav Opyr ▪ CTO ▪ Quintagroup ▪ http://quintagroup.com ˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙˙ --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~----------~----~----~----~------~----~------~--~---
