google app engine - How to redirect user requests to the closest GAE datacenter (US or EU)? -


i have application deployed both in united states , in european google app engine datacenters. (my-app-us , my-app-eu)

how can redirect user closest datacenter based on location? objective obtain best latency.

a french user should redirected eu datacenter wheras canadian user should redirected datacenter.

edit latencies given pingdom:

  • users in european coutries datacenter: ~300 ms
  • users in european coutries eu datacenter: ~60 ms
  • user in usa datacenter: ~50 ms
  • user in usa eu datacenter: ~300 ms

sounds want routing transparent both users , applications. if true, dns routing can option. here's example provider:http://www.dnsmadeeasy.com/services/global-traffic-director/

most dns providers offer this. main downside stated in comments, if data not replicated , user travels, experience won't great.


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