An attempt to implement a popular design question asked in various interviews.

git clone https://github.com/vivekkothari/game-leaderboard.git
cd game-leaderboard
docker compose up -d

Then run src/main/java/com/github/vivekkothari/Main.java file

This will start,

1. server accepting request of game completion.
2. a kafka producer
3. a kafka consumer

You can simulate game completion events by running the following command in a separate terminal:

./simulate_game_play.sh 10000 1 100   

the first arg is num of events, second is from userId, last is to userId.

You can view the top k players by running the following command in a separate terminal:

curl -X GET "http://localhost:4040/top-scores?limit=10"