Riak overview

When you should use Riak

• You need a reliable, extremely fast non-relational database.
• You need private cloud storage for non-huge files which can be called directly through a browser.
• You need a JavaScript based mapreduce engine.
• You need to play with your database via a simple REST interface.
• AP + Eventual consistency from CAP is OK with you.

Link: An Overview of Riak: an Open Source NoSQL Database at Uptime & Performance Tips via blog.monitis.com