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SICP: The only computer science book worth reading twice? (2010)

(simondobson.org)
462 points pieterr | 1 comments | 16 Nov 24 17:23 UTC | HN request time: 0.201s | source
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__turbobrew__ ◴[16 Nov 24 20:40 UTC] No.42159121[source]▶
It’s interesting, SICP and other many other “classic” texts talk about designing programs, but these days I think the much more important skill is designing systems.

I don’t know if distributed systems is consider part of “Computer Science” but it is a much more common problem that I see needs to be solved.

I try to write systems in the simplest way possible and then use observability tools to figure out where the design is deficient and then maybe I will pull out a data structure or some other “computer sciency” thing to solve that problem. It turns out that big O notation and runtime complexity doesn’t matter the majority of the time and you can solve most problems with arrays and fast CPUs. And even when you have runtime problems you should profile the program to find the hot spots.

What computer science doesn’t teach you is how memory caching works in CPUs. Your fancy graph algorithm may have good runtime complexity but it completely hoses the CPU cache and you may have been able to go faster with an array with good cache usage.

The much more common problems I have is how to deal with fault tolerance, correctness in distributed locks and queues, and system scalability.

Maybe I am just biased because I have a computer/electrical engineering background.

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1. swatcoder ◴[16 Nov 24 23:42 UTC] No.42160581[source]▶
There are still innumerable people writing standalone programs, single-purpose embedded systems, independent components and libraries, etc

The industry has expanded to include a lot of large-scale distributed cloud projects (often where we might have expected mainframes and cobol before), with many of today's largest employers doing most of their work there, but none of that other stuff really went away. It's still being done every day.

You need a book for what you're doing, and not every book is going to be that. Apparently, SICP is not it. I possess and have read many books, and only some small number of them are applicable to the projects I'm working on at any time.

They don't compete with each other, they complement each other.