Max-FUS Caching Replacement Algorithm for Edge Computing

Edge computing technology can greatly reduce the network load and the user response delay, which can effectively make up the defect of the cloud computing. However, edge storage nodes have much smaller space than cloud computing, therefore it is necessary to select an appropriate cache replacement policy to replace data that some users do not frequently request in order to cache the newly accessed data. This paper focuses on the problem of data replacement and the corresponding replacement strategy when the edge storage node lacks buffer space. Maximum file utility of system (Max-FUS) caching replacement algorithm are proposed to solve this problem. Finally, the edge computing system model, which is established in order to verify the feasibility of the algorithm by MATLAB simulation experiment, shows the Max-FUS can achieve better performance than the existing methods.