~betterdevlink | Bookmarks (86)

How to write a code formatter We use code formatter all day long. But what is the process of implement such as a tool?

A search engine in 80 lines of Python In this post I will walk you through the journey of buliding a search engine from scratch using Python. As usual, all the code I’ve written can be found on my GitHub (microsearch repo). This implementation doesn’t pretend to be a production-ready search engine, just a usable toy example showing how a search engine works under...

The Simple Beauty of XOR Floating Point Compression I recently implemented a small program to visualize the inner workings of a scheme that compresses floating point timeseries by XORing subsequent values. The resulting visualizations are quite neat and made it much easier for me to understand this beautiful algorithm than any of the explanations that I had previously encountered.

A simple query with a big problem Render.com staging pipeline got blocked due to what looked like a simple query SELECT e.id FROM events e JOIN postgres_dbs db ON (e.data ->> ‘serviceId’) = db.database_id LIMIT 1; Can you spot what’s wrong? Let’s read

Setting up PostgreSQL for running integration tests I’ll explain how to set up PostgreSQL for tests and discuss some common pitfalls to avoid.

Object structure in JavaScript engines Love it or hate it. We will stick with JavaScript for quite a long time. Understanding these objects and its memory lay out is a must to improve your performance optimization skill

I accidentally built a meme search engine Or: how to learn about clip/siglip and vector encoding images

How macOS opens a file in the correct app One of feature of Mac is it can detect the right app to open a file, even without a file extension. How did it works and how it evolve

Can You Grok It – Hacking together my own dev tunnel service Lets learn how to re-create a service similar to ngrok by re-using existing software such as nginx and openssh. There is also a great repository for these tunneling softwares

How do machine grok data By apparently overtraining them, researchers have seen neural networks discover novel solutions to problem

crystal ruby a gem that allows you to write Crystal code, inlined in Ruby. All you need is a modern crystal compiler installed on your system.

devpod Like Codespaces but open-source, client-only and unopinionated: Works with any IDE and lets you use any cloud, kubernetes or just localhost docker. Pretty big so hard to grok all the code but will give an idea on how to approach these kind of system

PythonMonkey A Mozilla SpiderMonkey JavaScript engine embedded into the Python VM, using the Python engine to provide the JS host environment.

madge is a developer tool for generating a visual graph of your module dependencies, finding circular dependencies, and giving you other useful info.

Optimizing SQLite for servers SQLite default config is optimized for embeded use case, so most people trying it will encounter poor performances and the dreaded SQLITE_BUSY error. However, you can configure SQLite to reach ~8,300 writes / s and ~168,000 read / s concurrently, with 0 errors, on a ~40€ / m commodity virtual server with 4 vCPUs

vernier Next-generation Ruby 3.2.1+ sampling profiler. Tracks multiple threads, GVL activity, GC pauses, idle time, and more.

Building My First Homelab Server Rack Michael share with us how he built his first homelab server rack, a genuine post without affiliate links so we know he wasn’t bias.