If you want to become good at system design (in 3 weeks), learn...

Neo Kim@systemdesignone

40 views Nov 30, 2025 ~1 min read

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If you want to become good at system design (in 3 weeks), learn these 15 case studies:

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1. How Stock Exchange Works:

newsletter.systemdesign.one/p/stock-exchan…

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2. How LLMs Like ChatGPT Work:

newsletter.systemdesign.one/p/llm-concepts…

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3. How Twitter Timeline Works:

newsletter.systemdesign.one/p/system-desig…

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4. How Uber Finds Nearby Drivers at 1 Million Requests per Second:

newsletter.systemdesign.one/p/how-does-ube…

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5. How to Scale an App to 10 Million Users on AWS:

newsletter.systemdesign.one/p/aws-scale

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6. How Bluesky Works:

newsletter.systemdesign.one/p/how-does-blu…

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7. How Kafka Works:

newsletter.systemdesign.one/p/how-kafka-wo…

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8. How Slack Works:

systemdesign.one/slack-architec…

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9. How Does Google Docs Work:

newsletter.systemdesign.one/p/how-does-goo…

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10. How YouTube Was Able to Support 2.49 Billion Users With MySQL:

newsletter.systemdesign.one/p/vitess-mysql

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11. How Reddit Works:

newsletter.systemdesign.one/p/reddit-archi…

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12. How Spotify Works:

newsletter.systemdesign.one/p/spotify-syst…

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13. How URL Shortener Works:

systemdesign.one/url-shortening…

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14. Redis Use Cases:

newsletter.systemdesign.one/p/redis-use-ca…

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15. How Meta Handles 11.5M Serverless Function Calls per Second:

newsletter.systemdesign.one/p/serverless-a…

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