The Fetch function is used in conjunction with $p("register") and triggers all of the requests to our model servers for recommendations. You only need to call $p("fetch") once, even if you have multiple widgets. By default, the fetch function is blocked from firing multiple times on a single page.

If you are lazy-loading widgets, or need to request separate widgets at different times, you can enable multiFetch in order to allow $p("fetch") to fire multiple times on a single pageview.