A Novel Method of Fault-Tolerant Decentralized Lookup Service for the Cloud Computing

摘要

With the rapid development of cloud computing, data center network scale exponentially, and the traditional tree network topology have not accommodate this growth model for a single point of failure and bottlenecks. DCell is a decentralized, fault-tolerant data center network topology. Although DCell has good fault tolerance, it does not implement the strategy of the data object placemen and query. This paper proposes a novel model NetCloud of data placement and query for cloud computing in DCN based on DCell. In the NetCloud, the key of data item is be mapped to a binary string by the NetCloud_hash algorithms. We present placement and the fast locating strategy of the data object in the NetCloud. We analyze performance of NetCloud. The simulation shows that it has better query performance and fault tolerance.