Lab4ws: A Testbed For Web Services

Web services are increasingly being deployed in clusters located at geographically distributed datacenters linked via the Internet. Ideally, before the actual deployment of such a complex service, engineers would like to have a way to quantitatively analyze aspects such as performance, availability, and the load balancing achieved by the different solutions available. In this paper we present the Lab4WS, a testbed designed to reduce the difficulties associated with the evaluation of LAN and/or WAN deployed web services. The key features of Lab4WS are illustrated by using it to compare four WAN load balancing mechanisms (DNS-based, server-based, dispatcher-based, and client-based). © 2009 IEEE.(2002) TPC Benchmark W - Specification 1.8, , http://www.tpc.org/tpcw/spec/tpcwV1.8.pdf, FebruaryColajanni, M., Yu, P.S., A performance study of robust load sharing strategies for distributed heterogeneous web server systems (2002) IEEE Transactions on Knowledge and Data Engineering, 14 (2), pp. 398-414Cardellini, V., Colajanni, M., Yu, P.S., Dynamic load balancing on web-server systems (1999) IEEE Internet Computing, 3 (3), pp. 28-39Ye, X., Shen, Y., A middleware for replicated web services (2005) Proceedings - 2005 IEEE International Conference on Web Services, ICWS 2005, 2005, pp. 631-638. , DOI 10.1109/ICWS.2005.8, 1530855, Proceedings - 2005 IEEE International Conference on Web Services, ICWS 2005Salas, J., Perez-Sorrosal, F., Patio-Martnez, M., Jimnez-Peris, R., (2006) Wsreplication: A Framework for Highly Available Web Services, pp. 357-366. , WWW, L. Carr, D. D. Roure, A. Iyengar, C. A. Goble, and M. Dahlin, Eds.ACMFang, C.-L., Liang, D., Lin, F., Lin, C.-C., Fault tolerant Web Services (2007) Journal of Systems Architecture, 53 (1), pp. 21-38. , DOI 10.1016/j.sysarc.2006.06.001, PII S1383762106000609Osrael, J., Froihofer, L., Weghofer, M., Gschka, K.M., Axis2-based replication middleware forweb services (2007) Proceedings of the IEEE International Conference on Web Services 2007 (ICWS 2007), pp. 591-598. , IEEE Computer SocietyChatterjee, D., Tari, Z., Zomaya, A., A task-based adaptive TTL approach for Web server load balancing (2005) Proceedings - IEEE Symposium on Computers and Communications, pp. 877-884. , Proceedings - 10th IEEE Symposium on Computers and Communications, ISCC 2005Cardellini, V., Colajanni, M., Yu, P.S., Request redirection algorithms for distributed web systems (2003) IEEE Trans. Parallel Distrib. Syst., 14 (4), pp. 355-368Liu, L., Lu, Y., Dynamic traffic controls for web-server networks (2004) Comput. Networks, 45 (4), pp. 523-536Conti, M., Gregori, E., Lapenna, W., Client-side content delivery policies in replicated web services: Parallel access versus single server approach (2005) Perform. Eval., 59 (2-3), pp. 137-157Mendonça, N.C., Silva, J.A.F., Anido, R.O., Client-side selection of replicated web services: An empirical assessment (2008) The Journal of Systems and Software, 81, pp. 1346-136