One caveat: if you stuff too many entities (that are in a single entity group) into a write, you'll hit an RPC limit exception. It's pretty hard to trigger this, though. You'll need to be writing ~10mb+ worth of data in a single write to trigger it.
-- Ikai Lan Developer Programs Engineer, Google App Engine plus.ikailan.com On Tue, Feb 7, 2012 at 4:53 PM, Andrew Myers <am2...@gmail.com> wrote: > Thanks Ikai. Appreciate the clarification! > > All the best, > Andrew. > > On 8 February 2012 11:42, Ikai Lan (Google) <ika...@google.com> wrote: > > 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 <am2...@gmail.com> wrote: > >> > >> Thanks Jeff. Much appreciated. I'm using Objectify too ;-) > >> > >> On 8 February 2012 09:28, Jeff Schnitzer <j...@infohazard.org> 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 <am2...@gmail.com> > 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 > >> >> google-appengine-java@googlegroups.com. > >> >> To unsubscribe from this group, send email to > >> >> google-appengine-java+unsubscr...@googlegroups.com. > >> >> 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 > >> > google-appengine-java@googlegroups.com. > >> > To unsubscribe from this group, send email to > >> > google-appengine-java+unsubscr...@googlegroups.com. > >> > 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 > >> google-appengine-java@googlegroups.com. > >> To unsubscribe from this group, send email to > >> google-appengine-java+unsubscr...@googlegroups.com. > >> 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 > google-appengine-java@googlegroups.com. > > To unsubscribe from this group, send email to > > google-appengine-java+unsubscr...@googlegroups.com. > > 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 > google-appengine-java@googlegroups.com. > To unsubscribe from this group, send email to > google-appengine-java+unsubscr...@googlegroups.com. > 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 google-appengine-java@googlegroups.com. To unsubscribe from this group, send email to google-appengine-java+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/google-appengine-java?hl=en.
