Radar's top stories: June 27-July 1, 2011

Getting started with Hadoop, a look at Clojure, publishing lessons from Pottermore

Here’s a look at the top stories published on Radar this week.

Get started with Hadoop
Focusing on the Hadoop Distributed File System (HDFS) and MapReduce, this in-depth piece offers tips for organizations that are looking to evaluate Hadoop and deploy an initial cluster.
Clojure: Lisp meets Java, with a side of Erlang
Stuart Sierra digs into Clojure: what it is, how it works, and why it’s attracting Java developers.
Two lessons from Pottermore: Direct sales and no DRM
It’s not surprising that J.K. Rowing is forging ahead with a well thought-out direct sales plan for Harry Potter ebooks, but it’s a shock that publishers aren’t doing the same things for their titles.
What CouchDB can do for HTML5, web apps and mobile
Bradley Holt talks about what CouchDB offers web developers, how the database works with HTML5, and why CouchApps could catch on.