Building a notification infrastructure using Tcl, Zephyr, and Linda

  • Authors:

  • W. Scott Meeks

  • Affiliations:

  • The Open Group Research Institute, Cambridge, MA

  • Venue:
  • TCLTK'97 Proceedings of the 5th conference on Annual Tcl/Tk Workshop 1997 - Volume 5
  • Year:
  • 1997

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Abstract

This poster describes the design and implementation of a notification system that can be integrated with other Web tools and applications. A Tcl-based toolkit using the MIT Zephyr Notification System was built to allow applications to notify each other or a user of relevant changes in information. A blackboard service was built using the notification toolkit and a server for the Linda language. This service is used to selectively store notifications for later use by applications. The use and effectiveness of the toolkit and service were demonstrated in an application for conducting a distributed guided tour of individual Web pages, and by integrating notifications from our Mediator service into our HistoryGraph application.