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Web Apps

Web Apps

A web app is the software your business actually runs on: the login that gates your customers, the billing that takes their money, the admin panel your team works in all day, and the dashboards that tell you what is happening. It is the part that has to work at 3am, because that is when a payment fails or a signup breaks and nobody is watching. Building one well means getting the unglamorous things right, sessions that do not leak, money flows that never double-charge, forms that survive a bad network, and data that stays consistent when two people edit at once. These pieces walk through how we design and ship that layer: the patterns that scale, the failure modes that bite, and the choices that keep an app boring in the best way, predictable and always up.

8 pieces

All of the Journal
Close-up of syntax-highlighted source code on a dark screen with shallow depth of fieldWeb Apps

Hunt Down the N Plus One Queries Quietly Slowing Your API

Trace, index, and batch the database calls behind your p95 latency so every request returns before the user notices.

8 min read
Lines of component code on a monitor in a dim developer workspace with keyboard and screensWeb Apps

Make pnpm dev Bring Up Your Whole Stack in One Command

Wire a predev hook so pnpm dev brings up Docker, runs migrations, and checks env automatically with no manual prerequisites.

6 min read
A monitor displaying source code at a tidy developer workspaceWeb Apps

Stop Exhausting MySQL Connections in Next.js Dev Reloads

Hot reload re-creates module-scoped pools until MySQL caps out; stash the pool on globalThis so reloads reuse one set.

6 min read
A tidy developer workspace with code on screen, keyboard, clock and a small plantWeb Apps

Kill Startup Races With docker compose up --wait and Healthchecks

Define real healthchecks and wait on them with up --wait so your app never boots before MySQL and Redis can answer.

6 min read
Laptop showing code on a warm wooden desk beside a mug and notebookWeb Apps

Scale Realtime WebSockets Without Drowning in Backpressure

Connection limits, batched fan-out, backpressure, and jittered reconnection keep live updates smooth from ten to ten thousand users.

7 min read
MacBook Pro showing a code editor lit by ambient blue lightWeb Apps

How to Hunt Down N Plus One Queries Before They Melt Production

Find and fix the silent query fan-out that runs fine at ten rows and melts at five hundred, with eager loading and keyset pagination.

9 min read
Close-up of a screen with colorful syntax-highlighted source codeWeb Apps

Next.js Server Components Without the Waterfall Tax

Structure data fetching so server components stream and parallelize instead of stacking sequential round trips the user feels as lag.

8 min read
Screen of HTML markup with navigation and class attributes in bright syntax colorsWeb Apps

Fix Next.js 15 Pages That Render Unstyled Only in Safari

A Turbopack and Tailwind v4 dev-bundler bug drops your CSS in Safari; default dev to webpack and WebKit renders correctly again.

7 min read

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