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About the channel
The Hot Path — system design, explained in depth. How real systems are actually built and scaled: the architecture, the trade-offs, and the decisions that matter. Each video reasons through a problem from first principles to production reality — the parts most explainers skip — with a recurring focus on AI / LLM systems (RAG, agents, inference infrastructure) alongside the classic distributed-systems foundations (caching, queues, consistency, scaling). If you build backends, distributed systems, or AI infrastructure and you want depth over hand-waving, subscribe. New videos weekly.
Latest videos
Design the News Feed (Twitter / X) — System Design Interview
263 views · 09/05/2026
HyperLogLog — count millions of unique things in a few KB
130 views · 09/01/2026
I Built a Complete AI Agent From Scratch — Running Live
132 views · 08/30/2026
Design WhatsApp — System Design Interview (Part 1)
699 views · 08/29/2026
Your AI Agent Can Be Hijacked — and It Lies About 'Done'
63 views · 08/26/2026
Bloom Filters — the tiny structure behind fast databases
236 views · 08/26/2026
Latest Shorts
AI Hallucination, Explained in 60s #systemdesign #ai #llm
450 views · 09/04/2026
How Netflix Keeps Playing When Your Wifi Dips #systemdesign #netflix #streaming
280 views · 09/04/2026
Latency Numbers Every Engineer Should Feel #systemdesign #latency #performance
1.02K views · 09/03/2026
MCP & Tool-Calling, Explained in 60s #systemdesign design #mcp #ai #llm
314 views · 09/03/2026
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