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The most popular blog posts about software engineering on Hacker News. 14,532 posts.

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2073

Working with time in Postgres

A massive amount of reporting queries, whether really intensive data analysis, or just basic insights into your business involving looking at data over a certain time period. Postgres has really rich support for dealing with time out of the box, something that’s often very underweighted when dealing with a database…

2076

CRDT: Fractional Indexing

Collaborative peer-to-peer applications sometimes need to operate on sequences of objects with a consistent order across all peers. For example, a peer-to-peer photo album application might need to sync the order in which photos appear in an album.

2078

Low Level Bit Hacks You Absolutely Must Know

I decided to write an article about a thing that is second nature to embedded systems programmers – low level bit hacks. Bit hacks are ingenious little programming tricks that manipulate integers in a smart and efficient manner. Instead of performing operations (such as counting the number of 1 bits in an integer)…

2080

Reddit banned me for developing Geddit

Currently, I'm working as an AI Engineer @ amber . But mostly I'm an open-source software developer. That means I work on software projects that are free to use, modify, and distribute. Why? Because I believe knowledge should be free and open to everyone.

2083

Programming with Categories

In this course we explain how category theory—a branch of mathematics known for its ability to organize the key abstractions that structure much of the mathematical universe—has become useful for writing elegant and maintainable code. In particular, we'll use examples from the Haskell programming language to motivate…

2084

Stupid solutions: Live server push without JS

So in my post Is this evil? I covered a way of tracking users with CSS. While thinking about those weird ways of using the web I also started thinking about pushing live data to clients without JS. Or at least maintaining a connection. So WebSockets requires JS. WebRTC requires JS. Even HLS (video streaming), which…

2088

What's Functional Programming All About?

There are many descriptions floating around the internet, trying to explain functional programming in simple terms. Unfortunately, most discuss details only loosely related to functional programming, while others focus on topics that are completely irrelevant. So of course, I had to write my own!

2094

Why am I interested in Elixir?

I’ve had Elixir on the brain recently. And by recently I probably mean 2 years. In my defense I think it is fair to say it is blooming right now. I haven’t had much need of it, or opportunity for it, in my day-to-day of maintaining a Python legacy system, renewing another legacy or optimizing Elasticsearch. So I’ve…

2098

OpenClaw is changing my life

I want to share some thoughts on my recent experience with OpenClaw. Over the past year, I’ve been actively using Claude Code for development. Many people believed AI could already assist with programming—seemingly replacing programmers—but I never felt it brought any revolutionary change to the way I work. Sure…