H ome K ey-Value Store Introduction Documentation Design Recipes Ecosystem White Papers S QL Layer Introduction Documentation Performance R esources Blog Community Courses Videos C ompany About Us Contact Us Jobs Downloads Pricing Database technologies are undergoing rapid evolution, with new approaches being actively explored after decades of relative stability. As late as 2008, relational databases were both commercially dominant and well-entrenched in the development community. However, many large web applications had requirements that were poorly matched to relational databases, and alternative approaches had been demonstrated by Google's Bigtable and Amazon's Dynamo. As a result, new systems that abandoned the relational model were beginning to attract the attention of developers. The term "NoSQL" was first used in its current sense in 2...