By Charles Hayden May 11, 2009 5:35 pm May 11, 2009 5:35 pm Part of what we do here is monitor how readers are using NYTimes.com. All activity at the Web site is logged, but the overwhelming volume of data makes analyzing it difficult. Recently we’ve been exploring the on-demand storage and computation tools offered by Amazon Web Services, along with an open-source toolkit called Apache Hadoop. Th