Design a Live Score Ticker · System Design Interview

Design a Live Score TickerDesign the service that pushes live match scores to everyone watching a sports site or app, the moment a goal is scored.What it has to do

Show the current score of a match

Push each score change to everyone following that match

Show the right score to someone who opens the page mid-match

Scale

Concurrent viewers at peak: 5 million

Matches live at once: 200

Out of scope

Collecting scores from the stadium

Betting odds

Commentary and video

Fantasy league points

Practise this challengeAll system design challenges

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