Hey guys,

I was interviewed at Twitch earlier This was the question that was asked for sys design.

Given

• There is already defined Twitch video stream and chat box with a viewer count
• There is a User Service that requires User_id and provides User's Age and Gender.

The interviewer is a PM and wants to check if this feature is possible.
Question
Need to add Analytics dashboard of all viewers based on Gender, Agde distribuution graphs below the video stream.

Approach

• I had a WebSocket approach where the user devices provide heartbeat checks to server and Server produces data analytics on active users.