Dynamic load-balance model for web services

Web services is a very important technology of internet applications.How to improve its performance is a hotpot.Dynamic load-balance is introduced to web services to augment its fault-tolerance and scalability.The current situation of load-balancing algorithm is reported.Thenecessity of web services load-balance is analyzed,and on thisbasis adynamic load-balance modelisproposed.Methods are presented in the framework to dynamically determine the resource consumption value of services and to adjust the load-thresholds and the weights of servers.Measures are also discussed for overload protection.