The System Design and AI Brief for Engineers

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🍔🧠 How DoorDash Uses LLMs To Predict 10M+ Customer Grocery Lists

Oct 6, 2025

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11 min read

Weekly Digest

🍔🧠 How Dropbox Built AI Search Using RAG and AI Agent Techniques

Sep 8, 2025

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11 min read

Weekly Digest

🍔🧠 How Uber Eats Handles 2B+ Search Queries Daily (Full Architecture)

Jun 2, 2025

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12 min read

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🍔🧠 What's inside an LLM's KV cache

PLUS: Google's AI depth decline 🧠, Real-time agent load balancing ⚡, Semantic search ranking at scale 👨‍💻

Aug 10, 2026

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4 min read

🍔🧠 Kubernetes Internals: Control Plane Explained

PLUS: Ray 2x throughput boost ⚡, take-home interview breakdown 🔬, great work principles 📚

Aug 3, 2026

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4 min read

🍔🧠 Software Factories: Harnessing Loops At Scale

PLUS: In-process load balancing 💨, On-disk ANN indexes 💾, Rust integ tests 🧪

Jul 27, 2026

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5 min read

🍔🧠 Why Linear Feels So Fast (Technical Breakdown)

PLUS: Virtual memory explained 👨‍💻, Spark retires vector DBs 💾, Backprop explained simply 🧮

Jul 20, 2026

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4 min read

🍔🧠 The Personalization Stack DoorDash Built (Serves 100M+ Users)

PLUS: Uniqlo Decoded 🚨, Agentic patterns⚡, Be the idiot mindset 👨‍💻

Jul 13, 2026

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4 min read

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The System Design and AI Brief for Engineers

Trusted by 50,001+ engineers at Meta, Uber, Amazon, and more

🍔🧠 How DoorDash Uses LLMs To Predict 10M+ Customer Grocery Lists

🍔🧠 How Dropbox Built AI Search Using RAG and AI Agent Techniques

🍔🧠 How Uber Eats Handles 2B+ Search Queries Daily (Full Architecture)

Weekly Digest

🍔🧠 What's inside an LLM's KV cache

🍔🧠 Kubernetes Internals: Control Plane Explained

🍔🧠 Software Factories: Harnessing Loops At Scale

🍔🧠 Why Linear Feels So Fast (Technical Breakdown)

🍔🧠 The Personalization Stack DoorDash Built (Serves 100M+ Users)

Hungry Minds 🍔🧠