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Performance

Tag for content related to software performance.

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uv 0.13's tar-codec backend installs a 6,000-file sdist in 2.5 seconds instead of 3.8

uv 0.13's tar-codec backend installs a 6,000-file sdist in 2.5 seconds instead of 3.8

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7 min read
Stop Spawning Threads: Building a Lock-Free Work-Stealing Scheduler in Rust

Stop Spawning Threads: Building a Lock-Free Work-Stealing Scheduler in Rust

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5 min read
Django 6.1 Fetch Modes: The N+1 Fix With a Catch

Django 6.1 Fetch Modes: The N+1 Fix With a Catch

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7 min read
I measured DigImg vs TinyPNG vs ShortPixel on the same images (bytes + SSIM)

I measured DigImg vs TinyPNG vs ShortPixel on the same images (bytes + SSIM)

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5 min read
Why Is My SQL Server Slow? A 4-Step Diagnosis with Blocking, Wait Stats, Execution Plans and Missing Indexes

Why Is My SQL Server Slow? A 4-Step Diagnosis with Blocking, Wait Stats, Execution Plans and Missing Indexes

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9 min read
I Was Shipping Five Font Files. One Variable Font Replaced Them All.

I Was Shipping Five Font Files. One Variable Font Replaced Them All.

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6 min read
Blacksmith vs GitHub Actions vs Celesto CI: what the benchmarks say

Blacksmith vs GitHub Actions vs Celesto CI: what the benchmarks say

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5 min read
GitHub Actions cache: keys, scopes and the limits that decide a hit

GitHub Actions cache: keys, scopes and the limits that decide a hit

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6 min read
Design Your LLM Prompts for KV Cache Reuse: Prompt Architecture Is Infrastructure Architecture

Design Your LLM Prompts for KV Cache Reuse: Prompt Architecture Is Infrastructure Architecture

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2 min read
5 WordPress Speed Fixes That Actually Move Core Web Vitals

5 WordPress Speed Fixes That Actually Move Core Web Vitals

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2 min read
Two of our 1,029 page files are client components, and two pages 23 KB apart in HTML ship byte-identical JavaScript

Two of our 1,029 page files are client components, and two pages 23 KB apart in HTML ship byte-identical JavaScript

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4 min read
One of our 76 pages has animations on it, and the 45-leaf one in the hero is not in the list

One of our 76 pages has animations on it, and the 45-leaf one in the hero is not in the list

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6 min read
GitHub Actions checkout slow: shallow and sparse clones

GitHub Actions checkout slow: shallow and sparse clones

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7 min read
Our 79 pages contain 3,083 divs and 3,053 script tags, and after hydration the scripts win

Our 79 pages contain 3,083 divs and 3,053 script tags, and after hydration the scripts win

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5 min read
Zero of our 79 pages send a Content-Security-Policy, and the strict version would need 892 hashes

Zero of our 79 pages send a Content-Security-Policy, and the strict version would need 892 hashes

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7 min read
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