CODEWITHSUNDEEP
google-app-enginegoogle-cloud-datastore
billni
billni

Reputation: 127

About Datastore Write Operations daily limit？

My app writes 5000 entities to datastore daily, and each entity includes 6 columns, but this datastore write operatons reach the free max limit（50000 times）？ Why occur this problem？

Upvotes: 1

Views: 1360

Answers (1)

dlebech
dlebech

Reputation: 1839

Update: As of July 1st, 2016, the unit of measure is now "Entity Writes" with a free tier of 20,000. This is independant of indexes so this would no longer exceed the free tier and only cost 5,000 Writes.

If all 6 columns of your entity are indexed you are doing at least (2 + 6*2) * 5000 = 70,000 writes which exceeds the daily quota. From the billing page of Google App Engine:

New Entity Put (per entity, regardless of entity size): 2 writes + 2 writes per indexed property value + 1 write per composite index value

Source: https://developers.google.com/appengine/docs/billing

Upvotes: 6

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