Change detection and notification

Change detection and notification (CDN) refers to automatic detection of changes made to web pages and notification to interested users by email or other means.

Description

CDN systems are designed to monitor changes to web pages.

Before change detection and notification, it was necessary for users to manually check for web page changes, either by revisiting web sites or periodically searching again.

Limitations

Efficient and effective change detection and notification is hampered by the fact that most servers do not accurately track content changes through Last-Modified or ETag headers.

See also

• HTTP ETag
• Web page
• World Wide Web

External links

• Change detection and notification @ Wikipedia