Overview This is our forth episode! in it we cover: Interview with Gil Tene from Azul systems about GC. In what we did section we cover: Yardena used Cloud Foundry and VMC. Ronen used cloudsearch and released Cloujsearch, swiss arrows and criterium were mentioned too. In the news we covered: Groovy 2.0, Joxa, project Jigsaw delayed. Open source Architecture Nginx chapter. Akka eventsource library.