이 레슨은 당분간 영어로 제공돼요.
Remember the answer
The leaderboard's top 100 is read thousands of times a minute but changes only every few seconds. Asking the database each time is wasted work. A cache keeps a recent answer in fast memory.
이 레슨은 당분간 영어로 제공돼요.
The leaderboard's top 100 is read thousands of times a minute but changes only every few seconds. Asking the database each time is wasted work. A cache keeps a recent answer in fast memory.