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3029. Minimum Time to Revert Word to Initial State I
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System Design Case Study: Digital Wallet
In digital wallet servce, user can store money in wallet and spend it later.
System Design Case Study: Payment System
A reliable, scalable and flexible payment system is essential.
System Design Case Study: Real Time Leaderboard
In this article we will design a real time leaderboard for an online gaming.
System Design Case Study: Distributed Email System
Let’s design a large-scale distributed email service like Gmail or outlook.