Nick Johnson (Google) wrote: [...] > Not true - Transactions can encompass entire entity groups. With the > correct entity group configuration, you could perform updates on local > areas of the map transactionally.
Is it possible to directly access entities in a group other than the root one? I was under the impression not (but I could well be wrong). And I'm afraid it still wouldn't help --- I'd still need synchronisation between different groups when dealing with multiple areas on the map; and AppEngine's transactions are optimistic rather than blocking, which are no use to me. In addition the overhead to performing a single database access appears to be so high that it's *much* faster to read and write the entire database in two accesses than it is to read parts of it using multiple queries! Although that may change as the database size grows. -- ┌─── ｄｇ＠ｃｏｗｌａｒｋ．ｃｏｍ ───── http://www.cowlark.com ───── │ │ "They laughed at Newton. They laughed at Einstein. Of course, they │ also laughed at Bozo the Clown." --- Carl Sagan --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Google App Engine" 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?hl=en -~----------~----~----~----~------~----~------~--~---
