You can use the RemoteDatastore to do bulk puts directly from your desktop to the live datastore. It is extremely fast as it simply forwards on the binary protocol buffer data from one environment to another.

http://code.google.com/p/remote-datastore/

On 10 Jul 2010, at 20:06, Robert Lancer wrote:

What I would do is create a servlet that accepts a row or rows of the
spreadsheet as params, and then create a local java app to read from
the spreadsheet and gradually feed the spreadsheet to the servlet, app
engine accepts up to 500 entities in a put.

On Jul 10, 7:56 am, Ice13ill <andrei.fifi...@gmail.com> wrote:
I want to upload big number of objects (from an xls file) into
datastore. What is the best way (least time consuming) for inserting
and deleting a collection of entities ?

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