I settled with Generic DAO classes for Objectify wrapped by Jersey. I am using Backbone for the frontend MVC - so far, I have to admit that it is shaping up well.
Jerff - thanks for the library. On Apr 20, 8:48 am, Jeff Schnitzer <j...@infohazard.org> wrote: > No, get-by-key that reaches the datastore is a Read Operation. > However, memcache hits are free. > > Jeff > > > > On Fri, Apr 20, 2012 at 1:56 AM, Peter Han <devifr...@gmail.com> wrote: > > "However, you can convert queries into keys-only queries followed by > > batch get()s; this will cost small datastore operations for cache > > hits > > rather than full read operations" > > > keys-only query is a small datastore operation thats is clear, but > > batch get of entities by key also? Thank you. > > > On Apr 18, 6:49 pm, Jeff Schnitzer <j...@infohazard.org> wrote: > >> On Wed, Apr 18, 2012 at 3:36 AM, cloudpre <pbx.ku...@gmail.com> wrote: > >> > Jeff - thanks for the note. I have been trying to add few items in > >> > memcache manually. > > >> > Can put operations also be saved? Let's say I am updating the same > >> > query again after few seconds. > > >> I'm not sure what you mean here. The cache covers get(), put(), and > >> delete() operations. Queries do not affect the cache at all. > >> However, you can convert queries into keys-only queries followed by > >> batch get()s; this will cost small datastore operations for cache hits > >> rather than full read operations. Objectify4 will actually do this > >> for you. > > >> > Does it work flawlessly in the production? The last thing I want to > >> > see is our thousands of customers coming back and complaining. > > >> There have not been any complaints for the current cache code (3.1+), > >> and it is fairly widely used. Older versions of the cache code (3.0 > >> and prior) had synchronization issues, but for 3.1 I rewrote it with > >> some help from Ari and Alfred (Google). It should be transactionally > >> safe - even under heavy contention - as long as you don't hit > >> DeadlineExceededExceptions. > > >> Jeff > > > -- > > 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 > > athttp://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.
