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A sudden Hackney SSL's unknown certificate authority error

A small report on how upgrading OTP to version 23 brought out unknown certificate authority errors when making requests from HTTP libraries based on Hackney.

Stop logging as root in 5 simple steps

Do you still manage your virtual servers with the root superuser? Here are five easy steps to stop using root right now.

Improving IRB experience with a custom .irbrc

Ruby’s IRB is a lovely interactive console. By leveraging a custom .irbrc configuration file, we can make the experience even better.

Benchmarking Ruby 3 in PDF generation

Ruby 3 JIT was optimized against CPU-intensive demo, which left Rails enthusiasts left out. But what about tasks in the middle of both? Here’s my latest benchmark on Ruby 3 JIT in generating PDF files with Prawn.

Create a git branch archive

This week I needed to prepare some files for the buyers of my book Deployment from Scratch. I use various git repositories for the content and case studies, and I needed to create archives for the current release quickly.