Andy Glover interviews concurrency expert Alex Miller on his favorite topic, concurrency, as well as his recent article on GPars , the multicore future, and more. Alex works at Revelytix, building federated semantic web query products. Before that, he was technical lead at Terracotta, an engineer at BEA Systems, and chief architect at MetaMatrix. Alex tweets as @puredanger and blogs at Pure Danger Tech . He also founded the Lambda Lounge group for the study of functional and dynamic languages and the Strange Loop developer conference.