Comments on: unique integer IDs in Google datastore http://vrypan.net/log/2008/04/27/unique-integer-ids-in-google-datastore/ panayotis' notes about the web and everything else. Sat, 22 Nov 2008 10:42:00 +0000 http://wordpress.org/?v=2.6.2 By: Panayotis http://vrypan.net/log/2008/04/27/unique-integer-ids-in-google-datastore/#comment-223892 Panayotis Mon, 28 Apr 2008 08:46:33 +0000 http://vrypan.net/log/2008/04/27/unique-integer-ids-in-google-datastore/#comment-223892 @Lim: You are right. @Arik: I'm looking into it. @Lim: You are right.

@Arik: I’m looking into it.

]]> By: Arik http://vrypan.net/log/2008/04/27/unique-integer-ids-in-google-datastore/#comment-223787 Arik Mon, 28 Apr 2008 04:46:56 +0000 http://vrypan.net/log/2008/04/27/unique-integer-ids-in-google-datastore/#comment-223787 The only way this thing can fail is because of concurrency. Meaning what if two users are creating new items at the same time? Get count is called twice at the same time and they both get the same value. So they both store their entries with the same next value, because they receive the same current value. What do you think? The only way this thing can fail is because of concurrency. Meaning what if two users are creating new items at the same time? Get count is called twice at the same time and they both get the same value. So they both store their entries with the same next value, because they receive the same current value.

What do you think?

]]> By: Lim Chee Aun http://vrypan.net/log/2008/04/27/unique-integer-ids-in-google-datastore/#comment-223151 Lim Chee Aun Sun, 27 Apr 2008 09:03:32 +0000 http://vrypan.net/log/2008/04/27/unique-integer-ids-in-google-datastore/#comment-223151 Interesting attempt :) But I thought you can do something like obj.key().id() which is something like an unique ID in Datastore as explained here: http://code.google.com/appengine/docs/datastore/keysandentitygroups.html The only hassle is you have to store the data first to get its ID then re-store it again. Interesting attempt :)

But I thought you can do something like obj.key().id() which is something like an unique ID in Datastore as explained here:
http://code.google.com/appengine/docs/datastore/keysandentitygroups.html

The only hassle is you have to store the data first to get its ID then re-store it again.

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