The present invention extends to methods, systems, and computer program products for using distributed queues in an overlay network. Embodiments of the invention can be used to replicate queue state (e.g., inserted and/or deleted messages) within an overlay network and can be used to continue a process...http://www.google.de/patents/US8032578?utm_source=gb-gplus-sharePatent US8032578 - Using distributed queues in an overlay network