Dynamic Primary Copy with Piggy-Backing Mechanism for Replicated UDDI Registry
As the community using web services grows, the UDDI registry is a crucial entry point that needs to provide high throughput, high availability and access to accurate data. Replication is often used to satisfy such requirements. In this paper, we propose dynamic primary copy method, a variant of primary copy method to handle the replicated UDDI registry, and two algorithms implementing this method. In this method, the update is done at the site where the request is submitted. The algorithms use a simple mechanism to handle the conflicting requests on UDDI entities in an efficient fashion. Due to a large volume of update and inquiry requests to UDDI, the number and size of the messages are critical in any replication solution for UDDI registry. Our algorithms reduce both the number and the size of messages significantly. The main difference between the two algorithms is that one of the algorithms handles high degree of conflicting update requests in an efficient fashion without transmitting unnecessary intermediate results.
KeywordsRequest Message Primary Copy Acknowledgment Phase Service Broker UDDI Registry
Unable to display preview. Download preview PDF.
- 2.Ananthanarayana, V.S., Vidyasankar, K.: Dynamic Primary Copy with Piggy-backing Mechanism for Replicated UDDI Registry, Technical Report, Dept. of Computer Science, Memorial University, NL, Canada (under preparation)Google Scholar
- 3.Anderson, T.A., Breitbart, Y., Korth, H.F., Wool, A.: Replication, Consistency and Practicality: Are these Mutually Exclusive? In: ACM SIGMOD 1998, pp. 485–495 (1998)Google Scholar
- 4.Bernstein, P., Hadzilacos, V., Goodman, N.: Concurrency Control and Recovery in Database Systems. Addison-Wesley Publishing Company, Reading (1987)Google Scholar
- 5.Breitbart, Y., Komondoor, R., Rastogi, R., Seshadri, S.: Update Protocols for Replicated Databases. In: ACM SIGMOD (1999)Google Scholar
- 6.Chundi, P., Rosenkrantz, D.J., Ravi, S.S.: Deferred Updates and Data Placement in Distributed Databases. In: Int’l Conf. on Data Engg., pp. 469–476 (1996)Google Scholar
- 8.Kreger, H.: Web Services Conceptual Architecture (WSCA 1.0) IBM, Available from http://ww-4.ibm.com/software/solutions/webservices/pdf/WSCA.pdf
- 9.Jimènez-Periz, R., Patiño-Martìnez, M., Kemme, B., Alonso, G.: Improving Scalability of Fault-tolerant Database Clusters. In: Int. Conf. on Distributed Computing Systems (2002)Google Scholar
- 10.Sun, C., Lin, Y., Kemme, B.: Comparison of UDDI Registry Replication Strategies. In: ICWS 2004, pp. 218–225 (2004)Google Scholar
- 11.UDDI.org, UDDI Version 3.0 Specification, available from http://www.uddi.org/specification.html
- 12.Wolski, A.: Applying Replication to Data Recharging in Mobile Systems. Solid Information Technology 7(2) (2001), http://www.solidtech.com/pdf/sms-wolski.pdf