CLIENT-SERVER COMPUTING
WEB CACHING CACHING WEB PAGES IS NOWADAYS A HOT RESEARCH TOPIC (SEE, E G , [2,5,12,17,38,39,44] [47,51,52]) WEB CACHING IS INTENDED FOR USE IN WIDE AREA INTERNETS, SIMILARLY TO OUR CACHING SERVICE, AND SCALABILITY IS ALSO A MAJOR CONCERN HERE HOWEVER, THE WEB CACHING MODEL IS LIMITED TO DATA OBJECTS (HTML PAGES) ONLY AND DOES NOT DEAL WITH GENERAL OBJECTS THAT INCLUDE EXECUTABLE CODE MOREOVER, THE CONTENTS OF CACHES CAN CHANGE ONLY AS A RESULT OF A PRIMARY COPY UPDATE THE IDEA OF ACTIVE WEB CACHING [18] CAN BE CONSIDERED A STEP TOWARDS ACTIVE OBJECT CACHING THIS WORK PROPOSES TO ATTACH AN APPLET TO EACH WEB DOCUMENT WHEN A DOCUMENT (OR ITS CACHED COPY) IS RETRIEVED, THE APPLET IS EXECUTED ANOTHER POINT TO BE STRESSED ABOUT WEB CACHING IS THAT THE USER HAS EXTREMELY LIMITED CONTROL OVER CACHING DECISIONS THE WORK OF [42] DESCRIBES SEVERAL TYPICAL ENTERPRISE NETWORK SCENARIOS WHEN INCORRECT CACHING DECISIONS ELIMINATE ANY IM- PROVEMENTS IN RESPONSE TIME GAINED FROM USING WEB CACHING IN CONTRAST, CACHING DECISIONS IN OUR SERVICE ARE APPLICATION-CONTROLLED THEREFORE, PROPER APPLICATION CHOICE CAN ELIMINATE ALL OF THE ABOVE MENTIONED PROBLEMS CASCADE AND THE STANDARD CORBA SERVICES THE CORBA STANDARD SPECI?ES A COLLECTION OF OBJECT SERVICES, CALLED CORBASER- VICES THAT SUPPORT BASIC FUNCTIONS FOR USING AND IMPLEMENTING OBJECTS [46] THESE SERVICES ARE NEEDED TO SUPPORT MEANINGFUL AND PRODUCTIVE COMMUNICATION AT THE APPLICATION LEVEL AND ARE USEFUL FOR ANY CORBA APPLICATIONS REGARDLESS OF THEIR OPEN CLIENT SERVER COMPUTING AND MIDDLEWARE