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The most popular blog posts about software engineering on Hacker News. 21,842 posts.

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Fibers, Oh My

Fibers, Oh My! # Written by Dale Weiler, last updated Oct 5th, 2020 Twitter GitHub It’s been brought to the attention of many people in the game development industry that you can use fibers to parallelize your engines and games. This one presentation in particular: Parallelizing the Naughty Dog engine using fibers has…

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Finding unique items: hash vs. sort

A while back, I was trying to speed up some code which finds unique items in a collection. For example, transforming "AABBADCAB" => "ABDC" . There are two ways to do this efficiently - one is based on sorting, the other based on hashing. So, which is faster? I couldn't find the answer, so I ran some experiments and…

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Why MongoDB Never Worked Out at Etsy

In 2010ish, we tried to roll out a feature ( Treasury ) using MongoDB. It was an interesting experience. I learned quite a bit in the process. I wrote about what I was thinking at the time here . But for the most part it was an abject failure and Ryan Young wound up porting the entire thing to the MySQL shards which…