I'd like to understand a couple of things about the redundant InterestGroup and values situation :

1. In Chrome browser, Event time is updated after every refresh. To be more explicit, should not it be clearer to get the field name created date or updated date?
   Note : This situation seems to be only applied to the latest InterestGroup with the same values in a loop until the browser get a new event.

2. When I browse or refresh the browser, the same InterestGroup with the same values can be added instead of updating or overwriting the existing one. Which results to get a redundant list of InterestGroup and values.
   Question : At high scale, would not it be a risk of memory leak for the Chrome browser during the user journey?