Tachyony
Created page with "'''Change detection and notification''' ('''CDN''') is the automatic detection of changes made to World Wide Web pages and notification to interested users by email or other means.<ref>{{Cite book|last= Mallawaarachchi|first=Vijini |last2=Meegahapola |first2=Lakmal |last3=Alwis |first3=Roshan |last4=Heshan |first4=Eranga |last5=Meedeniya |first5=Dulani |last6=Jayarathna |first6=Sampath |url=http://worldcat.org/oclc/1201518429|title=Change Detection and Notification o..."