Evaluation of fault-tolerant distributed Web systems

Replication of information among multiple servers is necessary to service requests for Web application such as Internet banking. A dispatcher in distributed Web systems distributes client requests among Web application servers and multiple dispatchers are also needed for fault-tolerant Web services. In this paper, we describe issues related to building fault-tolerant distributed Web systems. We evaluate the performance of fault-tolerant distributed Web systems based on replication. Our evaluation is conducted on LVS (Linux Virtual Server) and the Apache Web server using the request generator, LoadCube. We show some performance measurements for the systems.