CODEWITHSUNDEEP
javagoogle-app-engineobjectify
quarks
quarks

Reputation: 35346

Max length of String stored with App Engine?

When storing String fields with App Engine:

Upvotes: 12

Views: 4621

Answers (4)

technocrat
technocrat

Reputation: 35

Based on updates to Google Datastore documentation from October, 2016, here are the limits

Maximum size of an indexed string property's UTF-8 encoding: 1,500 bytes

Maximum size for an unindexed property: 1,048,487 bytes (1 MiB - 89 bytes)

So you can store strings close to 1MB in size in an unindexed String property.

Upvotes: 1

Jason Washo
Jason Washo

Reputation: 625

I think the responses to this one are out of date, so I am updating. I'm using GAE version 1.9.22 and received this in the error logs:

String properties must be 1500 bytes or less. Instead, use com.google.appengine.api.datastore.Text, which can store strings of any length.

Using com.google.appengine.api.datastore.Text works well by converting the String object to Text (e.g., new Text(thisString) on the server side of your code. Any reference to libraries in com.google.appengine.api.datastore.* do not work on the client side. Class not found.

Upvotes: 5

stickfigure
stickfigure

Reputation: 13556

Objectify will automatically convert Strings of more than 500 characters to native Text storage. Be careful if you are indexing strings; Text objects are not indexed so the String > 500 chars will be unindexed.

Upvotes: 9

cheeken
cheeken

Reputation: 34685

Per the documentation, 500 characters. And no, Objectify is a wrapper and does not modify your data, so the data size limitations are unchanged.

Upvotes: 4

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