A new service migration strategy for next future network

The performance of web service could be influenced when network congestion appears. Methods of service migration can always reduce the communication cost especially when the service is popular and it takes up a lot of network resources. Many essential factors should be taken into account when we make the migration decisions, such as server load, delay, migration cost, etc. There are many strategies put forward and most have good performance. However, the invisible problem the previous work does not consider is that the previous migration strategies are passive and non-directional. The paper proposes a new strategy in which non-source node initiates a migration request actively and provides local network information for the source node in order to make the selection decision. We design a new cost model and a basic infrastructure to support our strategy. The simulation results show that our approach gets satisfactory performance gains.