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Tag for content related to software performance.

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Keeping a browser timer accurate in background tabs (what I learned building ClockAura)

Keeping a browser timer accurate in background tabs (what I learned building ClockAura)

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7 min read
CrUX Now Counts SPA Soft Navigations. 5 Things I'd Check Before Search Console Switches

CrUX Now Counts SPA Soft Navigations. 5 Things I'd Check Before Search Console Switches

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7 min read
Queue Time Is a Line Item

Queue Time Is a Line Item

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5 min read
One client component in our root layout wanted 56 strings, and was importing 100 KB of game metadata to get them

One client component in our root layout wanted 56 strings, and was importing 100 KB of game metadata to get them

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4 min read
Shipping a 56,000-game portal as a one-person operation: the stack that holds it together

Shipping a 56,000-game portal as a one-person operation: the stack that holds it together

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2 min read
Why My Node Process Kept Growing: Field Notes on Heap Snapshots, Module-Scope Caches, and Leaks That Only Appear When Instances Are Reused

Why My Node Process Kept Growing: Field Notes on Heap Snapshots, Module-Scope Caches, and Leaks That Only Appear When Instances Are Reused

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7 min read
ERA5 is already gzipped. I still made it 47% smaller — losslessly.

ERA5 is already gzipped. I still made it 47% smaller — losslessly.

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8 min read
Python 3.15 Improves Encoding Performance in Most Benchmarks but Lags in Base16 Compared to 3.14

Python 3.15 Improves Encoding Performance in Most Benchmarks but Lags in Base16 Compared to 3.14

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11 min read
How I Built BytesPDF: A Fast, Client-Side PDF Processing Platform

How I Built BytesPDF: A Fast, Client-Side PDF Processing Platform

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2 min read
Intersection Observer API

Intersection Observer API

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9 min read
The Mean Looked Fine. Goodput Said No.

The Mean Looked Fine. Goodput Said No.

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4 min read
AsyncLocalStorage vs Scope.REQUEST in NestJS: Fixing a Multi-Tenant Data Leak Without Killing Performance

AsyncLocalStorage vs Scope.REQUEST in NestJS: Fixing a Multi-Tenant Data Leak Without Killing Performance

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4 min read
Measure the Cold Start Before the Demo

Measure the Cold Start Before the Demo

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5 min read
The only path on our site with a one year immutable cache header is a path that serves nothing

The only path on our site with a one year immutable cache header is a path that serves nothing

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4 min read
Building Amblyotube: Dichoptic Video on Meta Quest (and Why Meta Connect 2026 Hardware Changes the

Building Amblyotube: Dichoptic Video on Meta Quest (and Why Meta Connect 2026 Hardware Changes the

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1 min read
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