When switching to the HR datastore, you might need to make some adjustments. For instance, fetching a large list of keys from multiple entity groups may be slower due to the transaction overhead. So you might need to evaluate your use of entity groups. It may also be that you've got a design that is making many datastore RPCs in serial, that will probably be more of an issue when on HR since there is a slightly higher average latency.
Robert On Thu, Aug 18, 2011 at 15:11, thstart <thst...@gmail.com> wrote: > Let me share my experience. > I was developing an AppEngine app for a year. > It was very fast (extremely fast), with latency > 1 sec. > When High Replication data-store was released I decided to give it > a try and switched to it. Unfortunately the latency got >1 Sec > sometimes > 2 Sec. The app worked a wile that way and because > still in beta I could experiment. So I decided to go to Billed option > to see if the reliability and more importantly the latency could improve. > Unfortunately this do not affected latency. Then I decided to go back to > Master/Slave - our customers mentioned immediately our app is 2 times > faster - again < 1 Sec latency. Then I needed to add https which is > very important for our app. This do not added significant latency so our > customers are very happy with this solution. Soon we will go public. > So the latency issue is a show stopper for high replication version > and we would want to stay with master slave. > Anybody with similar experience? > Thank you, > > > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine" group. > To view this discussion on the web visit > https://groups.google.com/d/msg/google-appengine/-/P1c_gMSRtl0J. > 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. > -- 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.
