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All things speed and scalability on the web.

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System Design Series #4: Understanding Rate Limiting - Why Every Scalable Application Needs It

System Design Series #4: Understanding Rate Limiting - Why Every Scalable Application Needs It

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4 min read
How we hit 100/100 Lighthouse on a real estate site (and why most are stuck at 30-50)

How we hit 100/100 Lighthouse on a real estate site (and why most are stuck at 30-50)

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6 min read
How We Cut Our Homepage TTFB from 800ms to Under 200ms (and Refreshed the Hero While We Were At It)

How We Cut Our Homepage TTFB from 800ms to Under 200ms (and Refreshed the Hero While We Were At It)

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5 min read
Stop Wasting Bandwidth: Master API Caching with ETags ⚡

Stop Wasting Bandwidth: Master API Caching with ETags ⚡

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2 min read
Why useCallback alone didn't make my React app faster — and what it's actually for

Why useCallback alone didn't make my React app faster — and what it's actually for

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8 min read
Your structured data is probably broken, and your crawler isn't telling you

Your structured data is probably broken, and your crawler isn't telling you

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3 min read
Building High-Performance E-Commerce Sites for Niche Fashion: A Developer's Guide

Building High-Performance E-Commerce Sites for Niche Fashion: A Developer's Guide

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2 min read
The RSC Payload Trap: Thinning Next.js Component Props ⚡

The RSC Payload Trap: Thinning Next.js Component Props ⚡

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3 min read
AVIF vs WebP vs JPEG: Real Benchmarks (2026)

AVIF vs WebP vs JPEG: Real Benchmarks (2026)

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4 min read
Stop Race Conditions: React AbortControllers ⚡

Stop Race Conditions: React AbortControllers ⚡

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2 min read
I Built a Free Image Optimizer That Outputs Responsive HTML — No Sign-Up, No Storage

I Built a Free Image Optimizer That Outputs Responsive HTML — No Sign-Up, No Storage

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3 min read
The CSS-in-JS Penalty: Zero-Runtime Styling in React ⚡

The CSS-in-JS Penalty: Zero-Runtime Styling in React ⚡

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2 min read
There was no independent, measured view of AI-API latency by region — so I built one

There was no independent, measured view of AI-API latency by region — so I built one

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4 min read
Stop Blocking the UI: Interruptible Rendering in React ⚡

Stop Blocking the UI: Interruptible Rendering in React ⚡

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2 min read
Fixing Slow TTI: Optimizing React Hydration in Next.js ⚡

Fixing Slow TTI: Optimizing React Hydration in Next.js ⚡

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3 min read
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