A Dynamic Replica Placement Mechanism Based on Response Time Measure
Wenfeng Wang, Wenhong Wei · 2010
Most of existing replication strategies mainly distribute replicas based on access frequency or total response time of the whole system, lacking of consideration of the response time requirement of a single request. To overcome the deficiencies, a model called RPRTM (Replica Placement based on Response Time Measure) is presented, and a genetic algorithm is designed to figure out the model. Example analysis indicates that the RPRTM can satisfy every node’s response time requirement of a single request and minimize the number of replicas at the same time. In addition, it reduces the total response time at most to improve the whole system performance.