Hello,

I am uploading some data and sometimes a put() fails (TimeoutError) so
that only a subset of the records are added. If I put() the records
again then there will be duplicates.

I first thought of using transactions, but creating entity groups
seems awkward for my dataset - I have 100000 records with no logical
groups.

I was thinking would an easier workaround be to just give each record
a unique key_name, so that if it was uploaded twice it would just
override the previous record. Is that a sensible solution?

Thanks

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