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"Clean" Code, Horrible Performance

Molly Rocket · 1.2M views · 2023-02-28 · 22:41

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Overview

Casey Muratori shows how typical 'clean code' object-oriented patterns can cost large factors in performance. He benchmarks them against simpler data-oriented code.

On Hacker News

A frequent citation in debates about SOLID and Clean Code, representing the performance-first side of the argument.

Recommended by 3 HN people across 5 months · HN mentions 2023–2026

Topics

Software performance & optimizationSoftware architecture & design
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casey muratoriclean codesoliddata-oriented designoptimization

What people said

xiphias2 · 2026-07 · Recommendation

If you want something real, look at Clean Code Horrible Performance youtube video if you haven't. I also found Bob Martin entertaining, but after trying to follow his suggestions I just got into the trap that Casey Muratori shows: even if I don't care about the performance of the code at the start, the amount of abstractions Uncle Bob advises makes it just too easy to make the code extremely hard to optimize later. [VIDEO]

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latexr · 2025-03 · Recommendation

You may enjoy “"Clean" Code, Horrible Performance”, from Casey Muratori. [VIDEO] Casey specialises in game engine research and development [LINK] And has an ongoing course on computer performance for programmers. [LINK]

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xiphias2 · 2024-08 · Recommendation

Look at Casey Murrey's Clean Code horrible performance youtube video: [VIDEO] I also watched clean code videos and used it in practice, and why it _felt_ right my code size blew up and actually it got harder to understand by other people instead of easier. Nowdays my main guidelines are getting a balance between less lines of code (while still readable), readable variable names and better performance. Also I may get hate here for it, but I learned a lot from watching George Hotz programming tinygrad (available on YouTube).

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Sources

Video by Molly Rocket, played through YouTube.

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