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Design a Pastebin is a easy system design interview question covering Distributed Systems, storage, caching, api design — the kind asked at FAANG (Facebook/Meta, Apple, Amazon, Netflix, Google) and AI-first companies like Anthropic, OpenAI, and Nvidia.
Design a service like Pastebin: users paste text (code snippets, logs, configs) and get a short shareable URL. 1 million new pastes per day, reads outnumber writes 10:1, pastes range from 10 KB typical to a 10 MB cap, and users can set expiry (10 minutes to never). Unlisted by default; support private pastes and custom aliases.
Interactive walkthrough on Pro
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What's inside this guide
Design rounds are decided on capacity estimates. Both tools are free.
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A full interview loop is more than one round. These are the others, each with what is on the site for it.