Blog

Learn how to expose custom Prometheus metrics from an Elixir app with PromEx, and the two traps that made mine report the wrong numbers in production. Read the full article

Learn how to render Mermaid diagrams natively in your Hugo site with a codeblock render hook, loading the library only where needed and matching your theme. Read the full article

How I achieved to ship code to production in the last two months without writing a single line of code by hand, with zero production incidents, zero rollbacks, and zero downtime. Read the full article

A practical way to name, inventory, and pay back technical debt on purpose, so it stops being a vague complaint and starts being something your team controls. Read the full article

Learn how to replace nut-monitor with a custom watchdog script to have more control on shutdown conditions. Useful for custom NUT servers as the one from Synology. Read the full article

Learn how to configure your PC with Bazzite Linux as a headless streaming gaming PC to play remotely on any device in your LAN. Read the full article

Learn how to configure Pi-hole as a local DNS server so every device in your LAN can resolve custom domains like myservice.home.arpa without touching each device's hosts file. Read the full article

In this article I explain how to configure caddy as a reverse proxy for your services (eg. Docker) with TLS encryption and HTTPS connection. Read the full article

I'll show you how to create a Debian VM in ProxmoxVE, with the root partition encrypted with LUKS that automatically unlocks and mounts at boot. Read the full article

If you want to configure email notifications from Proxmox quick and easy, here I tell you everything you need to know. Read the full article

I'll show you how to take advantage of Systemd capabilities to schedule backups tasks with logs and integrate Healthchecks.io to ping us on failure. Read the full article

After explaining how to set your own CA in last article, here I'll explain how to renew and upload those certificates in Synology DSM, Proxmox VE and Caddy. Read the full article

I'll show you how to create your own Certificate Authority (CA) to sign your own certificates, trust them, renew them, and use them in proxmox and Synology. Read the full article

In this article, I'll explain what is the "Ship, Show, Ask" git strategy, that I personally find very useful on mature teams. Read the full article

In this article, I share some code snippets to create a reading progress top bar like the one I have in my blog for both React and Vue. Read the full article

Today I'm here to explain what the 3-2-1 backup strategy is and why is important if you have your data hosted at home. Read the full article

Step-by-step instructions on how to create or clone a disk image from a PC to a Synology NAS server using Clonezilla, transmitting the image over LAN. Read the full article

Today I'll show you how to configure an Xbox One controller with a dongle to work with Linux and play with it on Steam. Read the full article

How to configure an Arch Linux based distribution (Manjaro) to automatically mount a LUKS encrypted Linux root partition on boot thanks to TPM 2.0. Read the full article

In this article, I'll show you how to enable TPM on your old computer, so you can install Windows 11 without having to upgrade your hardware. Read the full article

In this article, I'll show you how to use UUID v7 with Ecto and PostgreSQL without external dependencies. Read the full article

A guide to manage AWS credentials seamlessly with 1Password, including MFA, by integrating the 1Password CLI with the AWS CLI. Read the full article

In this article, I'll show you how to use erlang applications in your elixir codebase, and also how to translate them to elixir code. Read the full article

Learn how Phoenix LiveView works under the hood to provide interactive web applications rendered in the server. Read the full article

If you want to add existing photo files to Synology Photos from another folder or a backup without actually coping or duplicating them, check this. Read the full article

A by example guide to understand binary search trees, their structure, how they work, and how to implement them (in Python). Read the full article

A beginner's guide to pointers in Go. Learn what pointers are, how to use them, and why they are useful. Just the basics! Read the full article

"Public Money, Public Code" is an FSFE initiative advocating that all tax-funded software should be FOSS for transparency, efficiency, and public benefit. Read the full article

Have you ever wondered why it's so difficult to work with time and dates in code? Do you want to know why and some curiosities? Then, continue reading. Read the full article

Learn how to mount a Synology SHR1 disk on Linux (from a two disks volume - underlying RAID1 with LVM) and access its content. Read the full article

The F.I.R.S.T principles serve as a foundational framework for effective code testing, that help to create robust and reliable code tests. Read the full article

I'll show you how to use docker on macOS using Colima, a free and open source project that provides a native macOS backend for docker. Read the full article

Builder is a creational software design pattern, which allows constructing complex objects step by step. I'll show you how to implement it in Go. Read the full article

In this article, I'll show you everything you need to know about the net/http package in Go, to start quick prototyping your next API. Read the full article

In this article, I'll show you everything you need to know about the net/http package in Go, to start quick prototyping your next API. Read the full article

Now that October is about to start, I'd like to tell you about one of my favorite events of the year for the dev and open source communities: Hacktoberfest. Read the full article

In this article, I'm going to talk about how to create custom errors in Go, allowing to wrap external errors and give them context about our domain. Read the full article

If you want to know how concurrency and parallelism is achieved in go, their particularities, and what tools does go provide, here is all you need. Read the full article

In this article I will compare OpenVPN and WireGuard for security, speed, features, and ease of use in selecting the ideal VPN protocol for your needs. Read the full article

This is a step-by-step tutorial about how to set up a DNS server on a Raspberry Pi, to block ads in your entire network and gain in privacy. Read the full article

This is a step-by-step tutorial about how to set up a VPN server on a Raspberry Pi, to gain access to your LAN and get better privacy when away from home. Read the full article

Did you try to use git on a brand-new Mac computer or after a macOS upgrade and got a xcrun error? Here I will show you how to fix it. Read the full article

If you often get static electricity shocks when touching your laptop or your office chair, or your monitor goes black when you stand up, this may interest you. Read the full article

In this article, I show you a powerful tool to intercept Kubernetes traffic to your local environment, so you can test or debug your code locally. Read the full article

GPG keys are useful to sign and encrypt data. Here I will show you how to generate them, use them to sign commits, and migrate them to a new machine. Read the full article

Using a powerful feature of NestJS, exception filters, we can create a layer that will handle all the exceptions thrown by our application and return a custom error response. Read the full article

A quick guide to JavaScript (and therefore also Node and TypeScript) operators, with examples and references, in a handy way. Read the full article

In this article, I will explain to you how to set umami with Vercel and Supabase to collect privacy-friendly analytics from your website for free. Read the full article

In this article I show how to set a simple infrastructure for AWS using CloudFormation to access from anywhere a PostgreSQL RDS instance inside a VPC. Read the full article

In this article, I explain how to set up a full CI/CD flow in GitHub Actions for Node.js and Docker. From linter, to test, to docker build and publish. Read the full article

Strategy is a behavioral design pattern that lets you define a family of algorithms and use them selectively to solve the same problem. Read the full article

This is a tutorial with examples and further references to fully understand JavaScript arrays and their methods, in a handbook or quick-reference guide style. Read the full article

In this article I show how to convert callbacks, used in old node and JavaScript libraries, to the most modern and easy to use promises with async / await. Read the full article

The hexagonal architecture, or ports and adapters architecture, is an architectural pattern that aims to decouple your business logic from everything else. Read the full article

S.O.L.I.D. principles are five well known software design principles for OOP that aims for making software designs more understandable, flexible and maintainable. Read the full article

DevToys is a free and open source offline tool for Windows that helps developers with their day-to-day work Read the full article

I'll tell you how I discovered and fixed what was causing Mikro ORM to return stale data with a dependency injection framework like Nest.js. Read the full article

In this post I show you how to use TypeScript generics inside a Nest.js DTO in a way that allows Swagger to generate the correct OpenAPI schema definition. Read the full article

PowerToys is a Microsoft Official open-source tool that adds a lot of powerful add-ons to a regular Windows installation to improve your productivity. Read the full article

Thought this tutorial, you'll learn how to back up and restore a WSL2 system image in a .tar compressed file, using native WSL PowerShell commands. Read the full article

If you have ever tried to access an app running inside WSL and weren't able to connect, here I show yo how to open ports and forward apps in the WSL NAT. Read the full article

I will teach how to run Linux GUI (Graphical User Interface) apps from within the WSL2 using an open source third party tool called VcXsrv Windows X Server. Read the full article

I will explain how to configure WSL2 on Windows to have a fully productivity-wise programming environment, with integration with VS Code and Docker Desktop. Read the full article

This is the first post of a series that aims to explain how to get a fully productive and integrated Linux development environment within Windows 10. Read the full article