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Tag for content related to software performance.

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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
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
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
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
Frontend Memory Leaks — Detection, Diagnosis and Prevention

Frontend Memory Leaks — Detection, Diagnosis and Prevention

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21 min read
The Complete Guide to SVG Icon Optimization for Web Performance

The Complete Guide to SVG Icon Optimization for Web Performance

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5 min read
Sanity website slow? How to find the cause and what a fix costs

Sanity website slow? How to find the cause and what a fix costs

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6 min read
Free Tiers Are a Moving Target: Benchmark Them With a Frozen Envelope, Not a Screenshot

Free Tiers Are a Moving Target: Benchmark Them With a Frozen Envelope, Not a Screenshot

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6 min read
Time the Cold Start Before You Trust a Free Server With Your Review Bot

Time the Cold Start Before You Trust a Free Server With Your Review Bot

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6 min read
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