> Any indexable property will cost a couple million cpu cycle when you > put a new entity. You should set them to text or blob to avoid index > penalty.
I thought that he was asking about properties that are present in some instances and not others. If a given instance doesn't have a given property, it isn't indexed by that property and one would hope that there'd be no overhead when said instance is put. However, that statement raises another question. If each indexable property (that is present in a given instance) really costs a couple of million cycles, won't putting entities with a couple of hundred indexable properties fail consistently because of cpu issues? I ask because I'm thinking about using some indexable list properties which will require several hundred index entries for their entities. (I can keep the total below the 5k limit.) If putting such entities consistently fails, I'm going to have to rethink things, indexable list properties are far less useful than I thought, and the 5k limit isn't the real limit. On Dec 10, 2:50 pm, yejun <[EMAIL PROTECTED]> wrote: > On Dec 10, 3:38 pm, theillustratedlife <[EMAIL PROTECTED]> wrote: > > > Thanks Andy. It's nice to know all the hidden features. =) > > > If the datastore doesn't know about subclasses, I'm not sure they're > > worth using. Couldn't I give Question all the properties I might > > need, but only provide values to the ones each instance uses? Is > > there any sort of penalty for declaring properties in a model, but not > > using them? > > Any indexable property will cost a couple million cpu cycle when you > put a new entity. You should set them to text or blob to avoid index > penalty. --~--~---------~--~----~------------~-------~--~----~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/google-appengine?hl=en -~----------~----~----~----~------~----~------~--~---
