Building the Playground: How to Prep Your Codebase for AI Coders
How to turn a real-world 300k-line codebase into an AI-friendly playground, where AI coders ship features and engineers don't go insane.
AI10 min read
How things actually work.
Deep dives, investigations, fun. Complex topics, easy read.
No PhD required.
You think you know everything about making React apps fast? 😉
Latest
See all →Three investigations hot off the press.
How AI Remembers and Why It Forgets: Part 2. Tools and Agents
What are AI tools and agents really, and how do they keep Context in check? Let's poke around Claude Code, do a few experiments, and find out!
AI12 min read
How AI Remembers and Why It Forgets: Part 1. The Context Problem
How does AI actually remember things between messages, and why does it forget halfway through? I ran a few experiments on Claude Sonnet and GPT-5 and wrote down what I saw.
AI15 min read
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React
See all React →Internals, performance, and the parts of React that don't work the way you think.
Debugging with AI: Can It Replace an Experienced Developer?
Can AI actually debug complex React/Next.js issues? I tested it on three real bugs, investigated the root cause myself and wrote down the results.
27 min read
Can You Fetch Data with React Server Actions?
Can React Server Actions replace fetch for client-side data fetching? Let's investigate and find out.
13 min read
Bundle Size Investigation: A Step-by-Step Guide to Shrinking Your JavaScript
A practical guide to analyzing and reducing JavaScript bundle size. Learn bundle analysis, fix tree-shaking issues, remove duplicate libraries, and otherwise optimize your React app's JavaScript size.
34 min read
How AI actually works, and how to make it behave beyond vibe-coding.
Building the Playground: How to Prep Your Codebase for AI Coders
How to turn a real-world 300k-line codebase into an AI-friendly playground, where AI coders ship features and engineers don't go insane.
10 min read
How AI Remembers and Why It Forgets: Part 2. Tools and Agents
What are AI tools and agents really, and how do they keep Context in check? Let's poke around Claude Code, do a few experiments, and find out!
12 min read
How AI Remembers and Why It Forgets: Part 1. The Context Problem
How does AI actually remember things between messages, and why does it forget halfway through? I ran a few experiments on Claude Sonnet and GPT-5 and wrote down what I saw.
15 min read
Web Performance
See all Web Performance →Measured, not guessed. Digging into why apps are slow, and how to make them fast.
Can You Fetch Data with React Server Actions?
Can React Server Actions replace fetch for client-side data fetching? Let's investigate and find out.
13 min read
Bundle Size Investigation: A Step-by-Step Guide to Shrinking Your JavaScript
A practical guide to analyzing and reducing JavaScript bundle size. Learn bundle analysis, fix tree-shaking issues, remove duplicate libraries, and otherwise optimize your React app's JavaScript size.
34 min read
React Server Components: Do They Really Improve Performance?
A data-driven comparison of CSR, SSR, and RSC under the same app and test setup, focusing on initial-load performance and the impact of client- vs server-side data fetching (including Streaming + Suspense).
42 min read