Rhino was one of the first embeddable scripting languages for the Java Virtual Machine. While it was originally intended for Netscape's abandoned rewrite of its popular browser in Java, it saw mostly server-side use. This snowball rolled downhill until today, when we have Node.js being adopted throughout the cloud as a language for applications.
Meanwhile, the NoSQL revolution has not only made Oracle stock a dubious long-term retirement investment, but it has also brought us the growth of document databases. What do most document databases, such as MongoDB and Couchbase 2.0, use as their primary database format? Why, JSON, of course!
The winner by default?
Is this approach all it's cracked up to be? Node.js has its rough edges. It is single threaded (that is, single processor core) per process and has an option to deploy with multiple processes. This doesn't scale as well vertically, so buying a bigger, badder machine may not improve performance much. But it may not matter in the cloud, where you can simply deploy more and more instances.