i started pre-serializing my objects with an objectproperty which writes to the 
blobstore on put .
while serializing 50 entities with around 10 properties each on request took 
around 5-6 seconds as an average, now i cut the time in half at least.

On Jan 18, 2012, at 8:19 PM, Mahron wrote:

> I use my own serialization to communicate with a flash app and also
> for the datastore.
> 
> It is binary and gziped and allows for nested items and binary
> properties.
> 
> The compression, decompression, serialize and deserialize time is
> negligible compared to the datastore request time and sending back the
> data.
> 
> Btw, you seem to be the smart guy around here,
> 
> What happens under the hood when list properties are modified, index
> and composite index wise ?
> Does it modify added and removed values only ?
> 
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