On Sat, Feb 7, 2009 at 16:25, djidjadji <djidja...@gmail.com> wrote: > > Every GeneralCounterShard is an entity group. > A transaction can only operate on ONE entity group. > Your transaction code accesses every GeneralCounterShard for a given name. > With sharded counters you NEVER have a perfect value for the total count. > The value for get_count() <= Sum(shards) > You use shards because you have object-lock possibilities. > > Maybe this will work (using the function names from the article [1]) > Be aware that at maintenance moments memcache is not working. > > def get_count_and_increment(name): > count = get_count(name) > increment(name) > return count+1 > > [1] http://code.google.com/appengine/articles/sharding_counters.html
The code in my original email worked in dev_appserver, which I suppose is incorrect. --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
