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Duong Phuc Khanh (Kido) profile picture

Duong Phuc Khanh (Kido)

Dương Phúc Khánh (Kido / Khánh Dương) — Senior AI-Native Lead & Systems Architect. Creator of agent-harness-kit, Winter Arc & Kido Chronicles (https://truyen.khanhdp.com).

Location Da Nang, Vietnam Joined Joined on  Personal website https://khanhdp.com/about github website

Education

Da Nang University of Economics (DUE)

Work

Senior AI-Native Lead & Systems Architect at Tech Pulse

Killing Recursive CTEs: Sub-Millisecond Comment Trees & Bitmask RBAC in PostgreSQL 17

Killing Recursive CTEs: Sub-Millisecond Comment Trees & Bitmask RBAC in PostgreSQL 17

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8 min read
Anatomy of a Next.js 16 + Cloudflare Edge Outage: Eradicating RSC Flight Payload Cache Poisoning

Anatomy of a Next.js 16 + Cloudflare Edge Outage: Eradicating RSC Flight Payload Cache Poisoning

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8 min read
From 32KB SQL Joins to 46 Bytes: Architecting an O(1) Habit Streak Engine with Valkey/Redis Bitmaps & POPCNT

From 32KB SQL Joins to 46 Bytes: Architecting an O(1) Habit Streak Engine with Valkey/Redis Bitmaps & POPCNT

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8 min read
Why HTTP 304 Not Modified Quietly Erased Our PWA State (And How We Fixed SingleFlight Cache Races with Mutation Epochs)

Why HTTP 304 Not Modified Quietly Erased Our PWA State (And How We Fixed SingleFlight Cache Races with Mutation Epochs)

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9 min read
Zero-TBT & 8-Minute Mobile Sessions: Engineering a 60FPS Offline-First PWA on iOS Safari

Zero-TBT & 8-Minute Mobile Sessions: Engineering a 60FPS Offline-First PWA on iOS Safari

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3 min read
Why I Refused a $500/mo Cloud Bill: Running 1,100+ Active Users at 1.12s LCP on a Single 8GB Linux VPS

Why I Refused a $500/mo Cloud Bill: Running 1,100+ Active Users at 1.12s LCP on a Single 8GB Linux VPS

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3 min read
How I Built a 7-Gate Multi-Agent Engineering Harness (And Survived a 6:00 AM Race Condition Storm)

How I Built a 7-Gate Multi-Agent Engineering Harness (And Survived a 6:00 AM Race Condition Storm)

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4 min read
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