Stephen, The times I gave earlier were estimates of how much replication delay is introduced in each replication scheme. The "eventually consistent" flag is for reads only and dictates whether or not you care to read from the "Master" datastore - reads will go to a slave if there are issues reaching the master.
Robert, in future releases, we will allow developers to create aliases for their applications. Aliases are routing rules that will override the current routing. Unfortunately, these are not production ready, as we don't have any ACLs in place and there are edge cases. For developers that want to migrate to HR datastore right away and need an alias created (say, for HTTPS) and are willing to weather some weirdness around mail, XMPP and cron, I am happy to create the alias for them given that they can prove they own both applications (source and destination application). These developers can fill out a request for an application ID alias here: http://code.google.com/support/bin/request.py?contact_type=AppEngineBillingSupport -- 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 Thu, Jan 6, 2011 at 3:56 PM, Stephen <[email protected]> wrote: > > > On Thursday, January 6, 2011 11:09:24 PM UTC, Ikai Lan (Google) wrote: >> >> >> - Typically, how long does it take for HR query data to become consistent >> (a ballpark figure)? >> >> 100ms is the estimate. However - we have seen cases where this can be >> higher. If you were to use the eventual consistency read option in the >> master-slave configuration, we've seen that the average replication lag is >> about 3 minutes with an upper bound of 10 minutes. >> > > > What are the timings for the master/slave datastore with the > EVENTUALLY_CONSISTENT option? > > -- > 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]<google-appengine%[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.
