Community

How other people built it, and everything you can do on a board. Look around, then clone one and make it yours.

• system-design 21
• interview 16
• beginner 5
• data 4
• marketplace 4
• realtime 4
• backend 3
• media 3
• social 3
• ai 2
• ecommerce 2
• saas 2
• bot 1
• concurrency 1
• ddd 1
• devops 1
• domain 1
• fintech 1
• kubernetes 1
• messaging 1
• mobile 1
• mvp 1
• storage 1
• ui 1
• uml 1

• URL shortener, like BitlyThe first system design interview question: key generation, heavy reads, a cache in front, and click analytics off the request path.
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• Rate limiterToken bucket or sliding window? Where it runs, how nodes share counts and what happens when the limiter itself is down.
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• Clean architecture in UMLUse cases, ports and adapters as a class diagram, with the arrows pointing the right way.
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• Screens of a habit tracker appA mobile app sketched screen by screen, with where each button goes.
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• SaaS starter: one deploy, real customersWhat most products actually need at the start: a monolith, managed Postgres, auth, Stripe and error tracking. And what to leave out.
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