Codebase RAG
Delivered a Workers + D1 retrieval pipeline over 1.2M LOC that serves accurate code answers in 420ms p95, boosting incident triage resolution by 37%.
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Personal notes / Technical blog
Roy Zhu's technical notebook.
I'm Roy Zhu. This is my personal site and technical blog, where I keep notes on architecture, developer experience, AI-assisted workflows, and the practical details behind building software.
Featured Projects
CoPal
Launched a Playwright + Workers co-browsing assistant that cuts enterprise onboarding time by 45% through scripted product walkthroughs.
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Recent Posts
How to Use TypeScript to Make Your First Command Line Tool
Updated: at 12:08 AMLearn how to scaffold, test, and distribute a TypeScript-powered CLI so your engineering teams can automate workflows with typed, resilient tooling.
Guide: How to Compile and Run a Local Docker Image on an Amazon EC2 Instance
Updated: at 07:27 AMA practitioner’s walkthrough for packaging an ASP.NET workload with Docker, verifying it locally, and shipping it onto AWS EC2 with the guardrails needed for repeatable releases.
Building a Quote Management Application: A Step-by-Step Guide
Updated: at 12:17 PMWalk through designing a quote management workflow that captures leads, routes approvals, and keeps underwriting data consistent with ASP.NET Core patterns.