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Questions tagged [google-cloud-datastore]

Google Cloud Datastore is a scalable, fully-managed NoSQL document database for web and mobile applications.

Google Cloud Datastore is a scalable, fully-managed NoSQL document database for web and mobile applications. It offers the following features:

  • built-in query support: flexible query functionality that allows you to search for and filter result sets
  • ACID transactions: data consistency (both Strong and Eventual) that spans multiple replicas across multiple geos
  • automatic scaling: built on top of Google’s Bigtable infrastructure, Cloud Datastore will automatically scale with your data
  • high availability: by utilizing Google’s underlying Megastore service, Cloud Datastore ensures that data is replicated across multiple geos and is always available
  • local development environment: Cloud Datastore SDK provides a local environment that allows you to develop, iterate, and manage your Cloud Datastore instances efficiently

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7191 questions
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8 answers

What database does Google use?

Is it Oracle or MySQL or something they have built themselves?
solrevdev
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8 answers

How to think in data stores instead of databases?

As an example, Google App Engine uses Google Datastore, not a standard database, to store data. Does anybody have any tips for using Google Datastore instead of databases? It seems I've trained my mind to think 100% in object relationships that…
Jim
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9 answers

Google Cloud Bigtable vs Google Cloud Datastore

What is the difference between Google Cloud Bigtable and Google Cloud Datastore / App Engine datastore, and what are the main practical advantages/disadvantages? AFAIK Cloud Datastore is build on top of Bigtable.
Andrei F
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125
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12 answers

Google App Engine: Is it possible to do a Gql LIKE query?

Simple one really. In SQL, if I want to search a text field for a couple of characters, I can do: SELECT blah FROM blah WHERE blah LIKE '%text%' The documentation for App Engine makes no mention of how to achieve this, but surely it's a common…
littlecharva
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124
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30 answers

How to delete all datastore in Google App Engine?

Does anyone know how to delete all datastore in Google App Engine?
manman
87
votes
7 answers

How to browse local Java App Engine datastore?

It seems there is no equivalent of Python App Engine's _ah/admin for the Java implementation of Google App Engine. Is there a manual way I can browse the datastore? Where are the files to be found on my machine? (I am using the App Engine plugin…
Jim Blackler
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75
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5 answers

How do I query in GQL using the entity key

How do I write a query against the entity key using GQL in the Google App Engine Data Viewer ? In the viewer, the first column (Id/Name) displays as name=_1, in the detail view it shows the key as Decoded entity key: Programme: name=_1 Entity key:…
Thilo
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62
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4 answers

Best practice to query large number of ndb entities from datastore

I have run into an interesting limit with the App Engine datastore. I am creating a handler to help us analyze some usage data on one of our production servers. To perform the analysis I need to query and summarize 10,000+ entities pulled from the…
Allen
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52
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16 answers

How to fetch more than 1000?

How can I fetch more than 1000 record from data store and put all in one single list to pass to django?
Zote
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49
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7 answers

Secure Google Cloud Functions http trigger with auth

I am trying out Google Cloud Functions today following this guide: https://cloud.google.com/functions/docs/quickstart I created a function with an HTTP trigger, and was able to perform a POST request to trigger a function to write to Datastore. I…
Tri Nguyen
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40
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7 answers

Copy an entity in Google App Engine datastore in Python without knowing property names at 'compile' time

In a Python Google App Engine app I'm writing, I have an entity stored in the datastore that I need to retrieve, make an exact copy of it (with the exception of the key), and then put this entity back in. How should I do this? In particular, are…
Gordon Seidoh Worley
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33
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7 answers

How do I delete all entities from my local Google App-engine datastore?

How can I remove all entities or reset the local datastore on my dev_appserver? I accidentally recursively called a function to create an entity when testing. I am using the Google App-engine SDK on Vista with Python.
Jason Rikard
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32
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2 answers

How do I define a unique property for a Model in Google App Engine?

I need some properties to be unique. How can I achieve this? Is there something like unique=True? I'm using Google App Engine for Python.
Alex Bolotov
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31
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4 answers

Webservice credentials - OpenID/Android AccountManager?

I'm building a webservice and would like to use the user's google account credentials. The service runs on GAE and will have a web client and an Android native client. This is my first attempt of something like this and I've been reading about…
Tomer Weller
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30
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1 answer

Price aside, why ever choose Google Cloud Bigtable over Google Cloud Datastore?

If I have a use case for both huge data storage and searchability, why would I ever choose Google Cloud Bigtable over Google Cloud Datastore? I've seen a few questions on SO and other sides "comparing" Bigtable and Datastore, but it seems to boil…
zeBugMan
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