A queryID is a unique ID that is randomly generated by the search API to uniquely identify every search. The queryID allows you to connect a search query or browse request with a user event. With the queryID, you can analyze which search queries lead to search results that users click or convert on.
The queryID is included in the search API response. To retrieve the queryID, you can add clickAnalytics:true as a search request parameter.
You can find more info on keeping track of queryIDs in our documentation here: https://www.algolia.com/doc/guides/sending-events/guides/queryid/