Hi,
I want to know how to create/update the entities which are in different
entity groups ?
for ex: I want to update the *apple* and *carrot* entities in a transaction
but those parents are not same. (Here i am in such a situation)
Thanks in advance :)
*S*antosh *K*umar *K*
Many writes to the same object will lead to db failures. You really
should consider sharding:
http://code.google.com/appengine/articles/sharding_counters.html
On Sep 26, 12:41 am, Peter Dev dev133...@gmail.com wrote:
We are developing an application, where users can vote for many
objects.
Have you looked into using pull queues combined with sharded counters?
If you lease 1,000 tasks at a time you can probably condense writes
considerably. There are several different sharding strategies you
could take, even just one master set of shards each of which covers
all items. 100 shards
Why don't you use blobstore service??
http://code.google.com/appengine/docs/java/blobstore/overview.html
On Mon, Sep 26, 2011 at 5:57 PM, Guilherme Souza
souza.guilherm...@gmail.com wrote:
Hey guys,
i have a problem with uploading files at my project, i tried to use
the library
Good day Developers!
Any idea on how to crawl the internet in Google App Engine - Java? My thesis
requires me to search a book in the internet just using the book's ISBN.
Thank you very much. :D
--
You received this message because you are subscribed to the Google Groups
Google App Engine for
I agree with Mat. Just tell your users not to refresh or give them no reason
to. They aren't stupid. It's like when a site prevents me right-clicking - I
hate that site and never go back.
--
You received this message because you are subscribed to the Google Groups
Google App Engine for Java
I haven't been able to update one of my applications for the past several
hours. I keep getting the error:
Unable to update app: Error posting to URL:
https://appengine.google.com/api/appversion/create?app_id=xversion=22;
400 Bad Request
Client Error (400)
The request is invalid for an
Shared counter is cool and I use it... but if you have millions of
objects I cannot imagine how to manage them.
1 000 000 obj x 100 shards = 10 000 000 counters
1. How to reset them to 0 in specified periods?
2. How to set the shared sum for each object to show top 100 objects?
3. Too much DB API
Sorry, 100 000 000 counters
On Sep 27, 4:53 pm, Peter Dev dev133...@gmail.com wrote:
Shared counter is cool and I use it... but if you have millions of
objects I cannot imagine how to manage them.1 000 000obj x 100 shards =10 000
000counters
1. How to reset them to 0 in specified periods?
Thanks Stefanos,
i'm reading the documentation now. It will do resolve my problems.
Question done!
2011/9/27 Stefanos Antaris ssanta...@gmail.com
Why don't you use blobstore service??
http://code.google.com/appengine/docs/java/blobstore/overview.html
On Mon, Sep 26, 2011 at 5:57 PM,
My objects remain in the memcache only for about 5 minutes. I know that
there is no guarantee about the caching period, but this seems abnormal.
I've read that lack of memory could be the reason. The size of one object is
about 50K, and I typically cache less as 50 objects.
I have no flush
Is it possible to run the soap-samples from within the development server?
I changed the soap address location in the wsdl filt to soap:address
location=http://localhost:/codelabex5part1/ but it doesn't work...
--
You received this message because you are subscribed to the Google Groups
I would like to allow the user of my app engine application to switch
accounts, for users that have multiple accounts and use the google
multiple sign-ins turned on. I have tried using the
UserServiceFactory.getUserService().createLogoutURL() and send them
there, but that only seems to let them
Yeah, messy.
I'd use a backend for this. Possibly a set of backends if you need to
shard the data for write volume. I'd use Memcache only to cache the
count reads.
The basic entity is just an id and a count. An increment request goes
to a backend, which simply tracks the change. A batch
Hi all,
What's the best way to take snapshots of the GAE's database in a way it's
possible to backup/restore it if needed?
Thanks,
Daniel V.
--
You received this message because you are subscribed to the Google Groups
Google App Engine for Java group.
To post to this group, send email to
Hi,
I do personally scan each entity type via an ad hoc request and store
each instance as entry in an xml file stored in the blobstore.
You can then externalize it via download from another machine.
Another possible way is to store you data on Amazon S3: you can then
also store them 1 by 1 if
Hi Daniel,
Take a look at our Bulkloader Tool:
http://code.google.com/appengine/docs/python/tools/uploadingdata.html
Here is a great post:
http://ikaisays.com/2010/06/10/using-the-bulkloader-with-java-app-engine/
Hope this helps your needs!
Best,
Jose Montes de Oca
--
You received this
17 matches
Mail list logo
