AppEngine itself is entirely hosted in North America http://groups.google.com/group/google-appengine/msg/54879175e6ba7386
Try using webpagetest.org to compare loading times from various locations (inlcuidng a few Europe and US locations) In general you probably find AppEngine performs slightly better for European users than a tranditional hosted US site. As static assets could be served from a more local location, requests might be cached in Europe, and cross-atlantic requests should cross it via Googles network, which is possibly slightly better than normal translatantic traffic. On 13 March 2011 13:04, Richard Arrano <[email protected]> wrote: > Hello, > I had a few items I've been taking for granted and I was wondering if > anyone could clear up for me. First of all, I did some searching and I > realize Google employees can't say exactly where the servers are. > However, one issue that affects me is I've been counting on > performance being equal among European and American users. I assumed > that if an American user logs on, they will be talking to an American > server serving my application and if a European user logs on, they'll > be talking to a European server. Is this the case? If so, if I have > American and European users intermingling in a live environment, is my > application a good candidate for HR? Perhaps I don't fully understand > the Master Slave/HR distinction and someone could shed some light upon > this. > > Additionally, I realize that I shouldn't be using memcache for storage > I can count on without writing to the datastore. I've read that "even > within a minute" the key can be evicted. However, what about within > say 3-5 seconds? Could I count on a key being written in the memcache > and not being evicted within such a small timeframe with high > confidence? Perhaps another question in the same vein would be, what > is the average key life when the memcache is under pressure? > > Thanks, > Richard > > -- > 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. > > -- 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.
