thank you robert for your answer.
my models looks something like this.
class BaseEntity(db.Polymodel)
# common properties among all other entities
# search function among all subclasses
class Document(BaseEntity)
# additional props and functions
class Asset(BaseEntity)
# additional props and functions
class Container(BaseEntity)
# container for Documents, Assets and Containers
basically my app works as an Asset organizer lets say like a folder tree where
a Container is the folder entity and contains Documents, Assets and other
Containers based on hierarchical keywords/categories set on the Entities. that
means the Containers do not (or at least not regularly) have references to the
other entities it contains. so my queries absolutely need strong consitency. in
this app there are also a lot of property changes within a short time so im a
bit concerned about the 1 put() per second per entity group because it could
happen that i might have more than one within a second. another thing is that i
would like to make this app multitenant .
i would appreciate some hints for a high replication/multi tenant migration of
my app.
andreas
On Jun 19, 2011, at 3:13 PM, Robert Kluin wrote:
> Hey Andreas,
> It sounds like you're talking about the difference in your storage quota
> used and the total size of entities in your datastore statistics. That
> difference could be due to indexes, unfortunately indexes aren't included in
> the datastore stats. Star issue 2740.
> http://code.google.com/p/googleappengine/issues/detail?id=2740
>
> Also, the counts and statistics aren't realtime. They may be delayed by a
> day. Your blobs and tasks also count against the stored data quota.
>
> The main spots you need to consider entity groups are queries. By default,
> db.gets by key are always strongly consistent. You'll need to decide if your
> queries need strong consistency or not. If you give us some details, I'm sure
> someone will offer some design ideas.
>
> Robert
>
>
>
> On Jun 18, 2011, at 6:28, andreas schmid <[email protected]> wrote:
>
>> hi,
>>
>> i wrote a python app before the high replication datastore was introduced
>> and i don't use entity groups like in the tutorials for the hr datastore.
>> i deployed this app with some test data to a hr appid and i see that i have
>> 1,5gb of stored data but only 0,4gb of high replication data.
>> what does that exactly mean?
>>
>> will it work as it did on the master slave but it will not use the hr
>> datastore? will i have issues with inconsistent data?
>>
>> thank you
>>
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