Here is an article about transport layer caching. It was cited as one of the top 25 hottest articles for January-March 2012.
Source: http://top25.sciencedirect.com/subject/decision-sciences/8/journal/performance-evaluation/01665316/archive/38/
Source: http://top25.sciencedirect.com/subject/decision-sciences/8/journal/performance-evaluation/01665316/archive/38/