CookieTipoDurataDescrizione
__utmaGoogle Analytics2 anni dal set/updateUsed to distinguish users and sessions. The cookie is created when the javascript library executes and no existing __utma cookies exists. The cookie is updated every time data is sent to Google Analytics.
__utmbGoogle Analytics30 minuti dal set/updateUsed to determine new sessions/visits. The cookie is created when the javascript library executes and no existing __utmb cookies exists. The cookie is updated every time data is sent to Google Analytics.
__utmcGoogle AnalyticsFine della sessione del BrowserNot used in ga.js. Set for interoperability with urchin.js. Historically, this cookie operated in conjunction with the __utmb cookie to determine whether the user was in a new session/visit.
__utmtGoogle Analytics10 minutesUsed to throttle request rate.
__utmvGoogle Analytics2 anni dal set/updateUsed to store visitor-level custom variable data. This cookie is created when a developer uses the _setCustomVar method with a visitor level custom variable. This cookie was also used for the deprecated _setVar method. The cookie is updated every time data is sent to Google Analytics.
__utmzGoogle Analytics6 months from set/updateStores the traffic source or campaign that explains how the user reached your site. The cookie is created when the javascript library executes and is updated every time data is sent to Google Analytics.
_gaGoogle Analytics2 anniUsed to distinguish users.
_gatGoogle Analytics10 minutiUsed to throttle request rate.

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