DynamoDB is a NoSQL database service that aims to be easily managed, so you don't have to worry about administrative burdens such as operating and scaling. This article shows how to use Amazon DynamoDB to create a Mars Rover application. You can use the same concepts described in this post to build your own web application.
Apache CouchDB is an open source document NoSQL database that uses JSON for storing documents. In this article, Jan Lehnardt gives an overview of CouchDB, its architecture and what problems it aims to solve and why it is different from all other databases.
In cases when one desires to provide fine-grained control over the structure of the document responses based on the needs of their clients, Yoga is an open source alternative that integrates with existing REST applications. Yoga provides clients the ability to use selectors, which can be used as projection, selection and join relational operators.
In part two of InfoQ's interview with the FlightCaster team, we discuss scaling Rails on Heroku, the problems of integrating data from multiple providers and mobile smartphone applications.
Platforms need interoperability. In this article Flex interoperability with JSON and XML is explored including direct mapping to chart and grid components. 2