The System Design Newsletter

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System Design Playbook 🔥
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May 23, 2025 • Neo Kim
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How Stripe Prevents Double Payment Using Idempotent API
May 9, 2024 • Neo Kim
How Uber Finds Nearby Drivers at 1 Million Requests per Second
Jan 4, 2024 • Neo Kim
How Stock Exchange Works
Nov 18, 2025 • Neo Kim
8 Reasons Why WhatsApp Was Able to Support 50 Billion Messages a Day With Only 32 Engineers
Aug 27, 2023 • Neo Kim
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