Is it possible to have an SEO friendly Express.js Web site? [closed]
What is your ressource? IMHO your information is wrong. The Url can be uses for some merge logical data.
This has nothing to do with caching, that has much to do with the response headers of your webserver:
- Etag: a tag for identifying if the content has changed
- Last-Modified: a way to check if the content has changed in the meantime
- Expires: the time how long the page should be cached without recontacting the server again.