google app engine - Index Disadvantages -

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according new update in pricing policy, there no more difference, cost wise, in making properties indexed or not. disadvantages of putting properties indexed?

  1. you can search indexed properties - did not change.

  2. if make every property indexed whether need them indexed or not, slow down performance of app when new entities added datastore.

  3. indexes take storage space. making properties unnecessarily indexed result in higher costs, though writing indexes free.


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