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JPernLite: Extensible Transaction Services for WWW

Jack Jingshuang Yang; Gail E. Kaiser

Title:
JPernLite: Extensible Transaction Services for WWW
Author(s):
Yang, Jack Jingshuang
Kaiser, Gail E.
Date:
Type:
Technical reports
Department:
Computer Science
Permanent URL:
Series:
Columbia University Computer Science Technical Reports
Part Number:
CUCS-009-98
Publisher:
Department of Computer Science, Columbia University
Publisher Location:
New York
Abstract:
Concurrency control is one of the key problems in design and implementation of collaborative systems such as hypertext/hypermedia systems, CAD/CAM systems and software development environments. Most existing systems store data in specialized databases with built-in concurrency control policies, usually implemented via locking. It is desirable to construct such collaborative systems on top of the World Wide Web, but most web servers do not support even conventional transactions, let alone distributed (multi-website) transactions or flexible concurrency control mechanisms oriented towards teamwork - such as event notification, shared locks and fine granularity locks. We present a transaction server that operates independently of web servers or the collaborative systems, to fill the concurrency control gap. The transaction server by default enforces the conventional atomic transaction model, where sets of operations are performed in an all-or-nothing fashion and isolated from concurrent users. The server can be tailored dynamically to apply more sophisticated concurrency control policies appropriate for collaboration. The transaction server also supports applications employing information resources other than web servers, such as legacy databases, CORBA objects, and other hypermedia systems. Our implementation permits a wide range of system architecture styles.
Subject(s):
Computer science
Item views:
179
Metadata:
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