  This paper shows an innovative solution for distributing dynamic sensor data
by using distributed caches. Our proposal is based on the concepts of service
modularization and virtualization of network nodes made available by the
NetServ hosting environment, which has been defined and implemented with the
aim of extending the functions of the network nodes. Through a lab experiment
involving tens of nodes, we have demonstrated a significant performance
improvements in term of traffic saving and download time in comparison with a
legacy, Internet-based, approach. Beyond this performance improvements, the
proposed solution holds also functional improvements, in terms of dynamic
deployment and easy integration with services making use of sensor data.
