Coauthor of the Bestselling 'System Design Interview' Series | Cofounder at ByteByteGo | YouTube: youtube.com/@ByteByteGo

Joined February 2009
729 Photos and videos
How to Design Good APIs
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Evolution of HTTP
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Apache Kafka vs RabbitMQ
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12 Architectural Concepts Developers Should Know
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Sahn Lam retweeted
We have received a few hundred emails already. Because of the high volume, our response time may be a bit slower. Please know that we are working through every email and will get back to everyone as soon as we can. To help us process requests more efficiently, we would be grateful if you could submit this short Google form instead: docs.google.com/forms/d/1rfH… Thank you for your patience.
Block recently laid off 40% of its workforce. I am truly sorry to everyone going through this. We want to provide a bit of support during this difficult time. We would like to offer one year of free access to our interview prep platform. Losing a job is incredibly stressful, and we hope this can ease at least one small part of the process. Our platform covers system design, coding patterns, ML system design, OOD, and more. There are no strings attached. Just email me at hi@bytebytego.com with your name and a brief note, and we will get you set up.
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Sahn Lam retweeted

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Sahn Lam retweeted
We’ve finished the first draft of a new book and are now looking for technical reviewers. The book focuses on hands on coding interviews and the trends companies are adopting today. The goal is simple. Make coding interviews more practical. More realistic. More aligned with how strong engineers actually think and build. We’re still deciding on the title. If you have a great idea, we’d love to hear it. If you’re interested in reviewing, 𝐞𝐦𝐚𝐢𝐥 𝐮𝐬 𝐚𝐭 𝐡𝐢@𝐛𝐲𝐭𝐞𝐛𝐲𝐭𝐞𝐠𝐨.𝐜𝐨𝐦. A short introduction or a link to your LinkedIn profile would be perfect. Ideally, you could review a chapter or two, so the commitment is small. Thank you for helping us make this book better.
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Sahn Lam retweeted
We started a new YouTube channel dedicated to AI fundamentals, infrastructure and models. So far, we’ve published four videos. We plan to publish 1 video every week. Since this channel is new, we’re still shaping its direction and would genuinely love your input. If there are topics you’d like to see covered, please share them with us. Thank you! Subscribe here: youtube.com/@TeamByteByteAI
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Sahn Lam retweeted
I am hiring for 2 roles: Technical Deep Dive Writer (System Design or AI Systems), and Lead Instructor (Building the World’s Most Useful AI Cohort). We are looking for exceptional people who love teaching and enjoy breaking down complex ideas. You will work very closely with me to produce deep, accurate, and well structured technical content. The goal is not volume. The goal is to set the quality bar for how system design and modern AI systems are explained. If you are interested, please send your resume along with a short note on why you are excited about the role to jobs@bytebytego.com Job descriptions are below ↓.
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How to Debug a Slow API?
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How to Design Good APIs
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How to learn payment systems?
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HTTP vs HTTPS
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IP Address Cheat Sheet
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Sahn Lam retweeted
I’ll be talking with Sualeh Asif, the cofounder of Cursor, about lessons from building Cursor at the Pragmatic Summit. If you’re attending, I’d love to connect while we’re there. 📅 February 11 📍 San Francisco, CA 🔗 Check it out here: pragmaticsummit.com
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System Design Blueprint
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Cookies vs Session
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Best Practices in API Design
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MCP vs API: what’s the difference?
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How to Learn Backend Development?
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