1. Would the recommendations stand for a write-intensive application? An example is, for example, a SalesForce.com type system, where there is a balance between entering data and reading it.
2. Can we hope that in the future, tools will be available to help with the migration? If, for example, you have lots of data already; and potentially other entanglements to an existing appspot domain - are these customers relegated to slowly dissolve into obsolescence? Or might there be a function available, in the future, to help with the migration? Thanks! johnP On Jan 31, 2:51 pm, "Ikai Lan (Google)" <ikai.l+gro...@google.com> wrote: > I'm going to let someone else answer this question, but we are recommending > that all new applications use High Replication datastore. Datastore latency > spikes are virtually non-existent if your application uses HR instead of > master-slave. > > -- > Ikai Lan > Developer Programs Engineer, Google App Engine > Blogger:http://googleappengine.blogspot.com > Reddit:http://www.reddit.com/r/appengine > Twitter:http://twitter.com/app_engine > > On Sat, Jan 29, 2011 at 10:25 PM, Natalie > <nataliegladstone...@gmail.com>wrote: > > > > > > > > > Hello, > > > We are at the planning phase on a new App Engine project, and we are > > unsure about the choice of Master/Slave and High Replication. > > > About our site: > > The site is expected to get a lot of hit (Around 50-200 QPS.). > > Around 20% write and 80% read. > > Minimal outrage a must. Will lose a lot of clients if outrages are too > > frequent. > > > We would love to hear from fellow App Engine developers of their > > experiences with HR. > > > In particular we want to know: > > 1) Recently the M/S datastore has very high latency for query. How’s > > your experience in HR? > > 2) What’s your approximate of the HR datastore availability? Is it > > close to 99.9%? > > 3) How is the read/write performance of HR datastore? Would love it if > > you could share some statistics. > > 4) How much does the cross datacenter synchronization issue affect the > > performance of your site? Please see this link about the issue: > > >http://groups.google.com/group/google-appengine/browse_thread/thread/... > > > It would be great if you could share your experience with us and other > > App Engine developers. > > > Thank you very much. > > > -- > > You received this message because you are subscribed to the Google Groups > > "Google App Engine" group. > > To post to this group, send email to google-appengine@googlegroups.com. > > To unsubscribe from this group, send email to > > google-appengine+unsubscr...@googlegroups.com<google-appengine%2Bunsubscrib > > e...@googlegroups.com> > > . > > 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 google-appengine@googlegroups.com. To unsubscribe from this group, send email to google-appengine+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en.
