Byte-Sized Design
Master system design concepts, engineering fundamentals, and interview basics. Weekly summaries, post-mortems, and advice for 43,000+ engineers.
| Platform |  | Pricing | Freemium | Publishes | Weekly |
|---|---|---|---|---|---|
| Issues | 163 | Founded | 4 years ago | Last Issue | 3 days ago |
| Active | |||||
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read.bytesizeddesign.comLatest Issues
🚪 Uber Put 5,000 Tools in Front of Its Agents. Every One Ships Switched Off.
800+ MCP servers behind one gateway, drafted by a crawler and approved by humans
⚡ TLDR Uber has 800+ MCP servers and 5,000+ tools sitting behind a single gateway, with hundreds of teams building agents on top. Almost none of the work was...
🚦 Spotify Doubled Its Engineering Output. The Bottleneck Just Moved.
Spotify's merged changes doubled with AI and code quality held. Review, testing, and ops strained instead. A five-part scorecard for measuring AI's real impact.
⚡ TLDR 17,000 merged changes in August, up from roughly 8,100 a year earlier....
🧱 Your Multi-Agent Architecture Is a 2016 Microservices Diagram With the Boxes Renamed
The parts that still work, the three places it breaks, and one heuristic for right now
⚡ TLDR Every multi-agent architecture diagram published this year looks like a microservices diagram with the boxes renamed. Planner, researcher, coder,...
🔌 Stripe's Proxy Was Opening Hundreds Of Thousands Of Connections
A Go proxy, one connection per host, and 3,000 days of latency saved every day
🤔TL;DR
How AssemblyAI Collapsed Four Vendors Into A single API Key
TLDR A production voice feature in 2026 typically ships with four vendor relationships: a transcription API, a PII redaction step somebody built in a sprint, an LLM provider, and a compliance review stretched across all of it.
TLDR A produ...
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Real talk about building systems that work. Career advice for growing engineers, how actual companies solve large-scale problems, post-mortems from things that broke, and the system design fundamentals that matter. No fluff, no buzzwords.
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