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July 3, 2011

Some Notes on App Engine Datastore

Limitations
  • Maximum size of an entity: 1 MB
  • Maximum number of elements of a ListProperty: 5000
  • CSV file for bulk loader:
    Longest line: 131072 characters.
    Update: This can be fixed by csv.field_size_limit(sys.maxint).

Reminders
  • Use double quote twice ("") to escape a double quote in CSV files.

    Author: eliang 於 Sunday, July 03, 2011
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    Tags: Datastore, Google App Engine

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