Hi,
The first time a user reaches your site, a cookie (labeled s_vi) receives an assigned value containing a unique visitor ID.
e.g.
[CS]v1|2EB8DA6D850799A0-40000120C0004BD9[CE] - Visitor ID
2021-09-05T12:40:44.789Z - Expiration
This unique visitor ID gets set on each hit by the user. When you set expiration in an eVar, it collects data till the expiration time ends.
| visior id | page name | evar1 | post_evar1 |
|---|
| 82117115115328710410 | home | | |
| 82117115115328710410 | search | car | car |
| 82117115115328710410 | product page | | car |
| 82117115115328710410 | cart | | car |
| Visit ends | | | |
| Next day (Before eVar Expiration) | | | |
| 82117115115328710410 | cart | | car |
| eVar1 expiration time ends | | | |
| Next day (After eVar Expiration) | | | |
| 82117115115328710410 | checkout | | |
| Once a expiration time ends, values stop being copied in the post_evar column. | | | |
Thanks!
Asheesh