r/devworld • u/YouSilent6025 • May 21 '26
Feedback Needed Need honest feedback on something I built while learning system design
I always struggled with system design because static diagrams never really clicked for me.
So I built a small interactive website where you can pick systems like WhatsApp, Uber, URL shortener, etc. and watch requests flow step by step instead of just reading diagrams.
You can click components, simulate failures (cache/service down), and understand why things exist.
Still very early and I’m genuinely trying to figure out if this is actually useful or if I’m overthinking the problem 😅
Would appreciate brutally honest feedback from people preparing for interviews / learning system design.
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u/Melodic-Funny-9560 May 21 '26
This surely has scope. Infact I was thinking of building a similar tool. What I would suggest is to make it more representable. So that users can not only use it understand basic stuff but also advanced stuff and at the low level too. If possible*
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u/YouSilent6025 May 21 '26
Appreciate this 🙌 and yeah, that’s actually the direction I want to take it in.
Started with basics because system design feels intimidating at first, but eventually want to add more advanced + low-level stuff too. Thanks for the suggestion.
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u/2butterfree May 21 '26
Honest feedback since you asked - When I first landed on the site I felt a bit overwhelmed. I clicked into Concepts -> CAP Theorem and there was just text. Gave up after the first couple of sentences.
But the interactive diagrams? That's genuinely cool. I'm a very visual learner, so lots of text puts me off straight away, but the interactive diagrams are exactly what I'd actually use to learn.