xAIVerified interview challenge
Aggregate active time in live audio spaces
Turn audio-space events into completed listening time and a live ranking of active spaces.
Unlock with Full AccessThe challenge
Process creation, join and leave events for live audio spaces. First calculate time from completed user sessions, then maintain a live ranking of spaces by active users.
Historical participation and current occupancy describe different things. Extend your implementation so closing a session contributes to elapsed time while each new event also updates the view of who is active now.
What you'll practise
Session accounting
Pair state transitions correctly when calculating completed activity.
Live ranking
Maintain the current view as users join and leave spaces.
Current partFurther parts unlock as you progress
solution.pyPython 3.13
# Build on your implementation
# Run checks for the current part
# Full starter code includedCurrent-part checks
Run your code to see results.
The complete sequence, starter code and checks are included with Full Access.