The Google Cloud Datastore is a fully managed NoSQL database service, built upon Google's Bigtable and Megastore technology, to support automatic scaling, high performance, and ease of application development.

Datastore is something that we turn to when we are looking for document-oriented storage in a NoSQL database. This is something that datastore offers in competition with other products such as MongoDB and CouchDB. Cloud Datastore features are best remembered via the story at the start of the chapter, so please do go back and read it if you skipped past it the first time.