Implementing highly-available WWW servers based on passive object replication

Author

Baldoni, Roberto ; Bonamoneta, Simona ; Marchetti, Carlo

Author_Institution

Dipt. di Inf. e Sistemistica, Rome Univ., Italy

fYear

1999

fDate

1999

Firstpage

259

Lastpage

262

Abstract

We investigate issues related to building highly available World Wide Web (WWW) servers on workstation clusters. We present a novel architecture that includes a dynamic Domain Name System (DNS) and a WWW server based on passive object replication. This architecture allows us to reduce the service down-time of a WWW server without impacting on the Hyper Text Transfer Protocol (HTTP) protocol (and thus on the WWW client software). We implement this architecture in our department and we show some experimental results that analyze, given a batch of HTTP requests, the average response time to a request and the average time of WWW service unavailability due to object crashes

Keywords

distributed object management; file servers; information resources; workstation clusters; HTTP; Hyper Text Transfer Protocol; WWW client software; WWW server; WWW service unavailability; average response time; dynamic Domain Name System; highly available World Wide Web servers; object crashes; passive object replication; service down-time; workstation clusters; Buildings; Computer architecture; Computer crashes; Delay; Domain Name System; Protocols; Web server; Web sites; Workstations; World Wide Web;

fLanguage

English

Publisher

ieee

Conference_Titel

Object-Oriented Real-Time Distributed Computing, 1999. (ISORC '99) Proceedings. 2nd IEEE International Symposium on

Conference_Location

Saint-Malo

Print_ISBN

0-7695-0207-5

Type

conf

DOI

10.1109/ISORC.1999.776387

Filename

776387