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Contributor
Posts: 120
Registered: ‎11-06-2015
Accepted Solution

Meaning of utag_main Cookie Parameters

[ Edited ]

In https://community.tealiumiq.com/t5/iQ-Tag-Management/Tealium-Cookies/ta-p/138, some standard parameters are explained. However, we also see the following:

vapi_domain:

dc_visit / dc_event / dc_region: 

Can they be added to the doc?

 

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Occasional Contributor
Posts: 117
Registered: ‎12-11-2015

Re: Meaning of utag_main Cookie Parameters

For the benefit of anybody who finds this post and wants to know what the Tealium Collect cookies are for:

Cookie NameFunction
dc_groupStores a random number between 1 and 100 for the user, which is then used to compare against the sample rate to determine if this user qualifies for data collection (e.g. if the sample rate is 80%, only users with a dc_group value between 1 and 80 will be in scope).
dc_regionStores the region of the data collection server, returned in the response headers of the first XHR call and stored for the duration of that session, ensuring that all data for a given session is collected by the same server
dc_eventAuto-incrementing event ID within the current session, starts from one, persits for the life of that session
dc_visitAuto-incrementing session ID stored persistently, starts from one, increments each time the dc_event value expires
Employee Emeritus
Posts: 1,019
Registered: ‎08-26-2015

Re: Meaning of utag_main Cookie Parameters

Great answer @UnknownJ. Thank you so much for this!

Remember to give me a kudo if you like my post! Accepting my post as a solution is even better! Also remember that search is your friend.
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Contributor
Posts: 120
Registered: ‎11-06-2015

Re: Meaning of utag_main Cookie Parameters

Better than Kudos @kathleen_jo: Add it to the - as way too often - incomplete documentation (see my link in the first post): https://community.tealiumiq.com/t5/iQ-Tag-Management/Tealium-Cookies/ta-p/138