Andrew, multiple writes of entities in a single batch put to the same entity group count as 1 entity group write (but many more datastore write ops - this might be confusing), so you won't run into contention issues.
-- Ikai Lan Developer Programs Engineer, Google App Engine plus.ikailan.com On Tue, Feb 7, 2012 at 2:48 PM, Andrew Myers <[email protected]> wrote: > Thanks Jeff. Much appreciated. I'm using Objectify too ;-) > > On 8 February 2012 09:28, Jeff Schnitzer <[email protected]> wrote: > > From my experiments, writing large #s of entities to a single EG in a > > batch put is quite fast and does not cause the throughput problem. > > > > Jeff > > > > On Tue, Feb 7, 2012 at 4:43 PM, Andrew Myers <[email protected]> wrote: > >> I'm sure this is a FAQ but I haven't been able to find the answer so > far. > >> > >> I have read there's a limit of 2-3 writes per second per entry group. > If you batch out multiple entities that all have the same parent is this > ok? Or does it count as multiple writes? I understand it is multiple > writes in terms of write quotas but am not sure if it's a problem in terms > of the writes per group per second? > >> > >> Many thanks, > >> Andrew > >> > >> -- > >> You received this message because you are subscribed to the Google > Groups "Google App Engine for Java" 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-java?hl=en. > >> > > > > -- > > You received this message because you are subscribed to the Google > Groups "Google App Engine for Java" 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-java?hl=en. > > > > -- > You received this message because you are subscribed to the Google Groups > "Google App Engine for Java" 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-java?hl=en. > > -- You received this message because you are subscribed to the Google Groups "Google App Engine for Java" 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-java?hl=en.
