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[khenmu (John Sweeney)]

This is the best topic I can find on this topic;

How does post tracking work in Discourse

Discourse tracks read time for every post users see on the screen. This system has evolved over the years and I find I often need to refer back to the code to figure out how this works and why it exists. This post covers the painful technical details of the current implementation. How the Discourse client tracks timing Post timing tracking is implemented in screen-track.js.es6. This module is responsible for tracking how long a post has been on the screen and how long the topic has been on sc…