Deep-dives on Elixir, Phoenix, OTP and distributed systems — code first, from two decades of shipping production software.
Code has become cheap, but having an agent generate an app doesn't make it a product. A new series reviewing SaaS apps that launched and failed to convert, or sit abandoned — and what went wrong.
A decade of semantic versioning stability means AI agents trained on 2020 code still produce working 2026 code
Python interpreter integration and ML model inference in Elixir
A code-first reference for OTP supervision in Elixir: child specs, the three strategies, restart types, restart intensity, shutdown semantics, and DynamicSupervisor.
Zero-downtime deployments, secrets management, and self-hosted Elixir apps
A code-first walkthrough of how I cut a multi-agent Claude Code outline workflow from ~768k to ~85k output tokens — the fan-out cap, failure isolation, the approval gate, and live token tracking, all in real workflow-script JavaScript.
OpenTelemetry integration, distributed tracing, and structured logging
When to split contexts, cross-context communication, and avoiding the god context anti-pattern
Component design, nested live views, and handling complex state in LiveView
Domains, resources, actions, and policies - when Ash makes sense
Implementing Zero Trust Authentication with nimble_zta and identity-aware proxies
Beyond example-based tests: generators, shrinking, and finding edge cases
Node clustering, process groups, and handling network partitions in Elixir
Code patterns that maximize AI agent success—and the anti-patterns that confuse them
Immutability, pattern matching, and pure functions make Elixir ideal for AI coding agents—the data proves it
Using Instructor for structured LLM output and building AI features in Elixir
How project structure, tooling, and practices evolve when AI agents are central to development
Component testing strategies, mocking, and testing JS hooks
Telemetry integration, charting, and handling high-frequency updates in LiveView
Remote shell access, process inspection, and tracing in production safely
Schema design, dataloader, subscriptions, and authentication patterns
Building event stores, projections, and handling schema evolution in Elixir
Introduction to the basic concepts of elixir, syntax, data structures and basic concepts
Elixir functional programming programming meta programming
Deep dive into supervisor strategies and designing supervision trees for real-world fault tolerance
Using window functions, CTEs, and advanced SQL features through Ecto
Using native implemented functions in elixir to integrate with rust
Beyond the basics: practical GenServer patterns from production systems
Schema-based vs row-based multi-tenancy and query scoping strategies
Process heaps, garbage collection, and memory profiling in Elixir
Explaining flow based programming using elixir and its ecosystem
An overview of n 1 problems with elixir and ecto and how to deal with them
Simple versioning for your Elixir project with no fuzz
A criticism and rebuttal of Paul Graham's Founder Mode essay -- survivorship bias, false dichotomies, and the cult of the founder
Why Elixir deserves a more prominent role in fintech—it’s fast, reliable, and perfect for building financial apps that can handle massive traffic without breaking a sweat
Documenting my learning journey in 2024 to become proficient and attempt to master Elixir and its ecosystem
A quick introduction into Backstage.IO
Using mix template and mix generator to create a phoenix blog starter template with liveview and tailwindcss
A quick update of what has happened with the blog on the last 2 years
Why you should start using abbreviations instead of aliases
Design for failure with the circuit breaker pattern
Five reasons that will make you love the Elixir language and stack if you don't already
Exploring the current state of headless commerce and how to best take advantage
Most developers focus a lot on technical skills but often fail to prepare for the most basic of soft skills interviews
A quick introduction and overview on the ideas behind Flow-Based Programming
Developing a basic contact using Ethereum
An introduction to Ethereum Development
Setting up a basic private test network for Ethereum development
Five technology trends to keep to watch out for in 2018.
Functional programming is making a big comeback and here is why developers should make their mission for 2017 to learn a functional language
A series focused on presenting Neural Networks and the related concepts in layman's terms, that is to say without specialized knowledge in math or machine learning.
I have have tried Atom, SublimeText, TextMate, Eclipse, Visual Studio, and most of the Jetbrains products, I'm constantly tweaking and looking for a better setup, however Vim always feels like home to me; and I'm to the point now where I rarely use IDEs – exception being messy and complex projects where IDEs can do a lot of heavily lifting
A series focused on presenting Neural Networks and the related concepts in layman's terms, that is to say without specialized knowledge in math or machine learning.
A series focused on presenting Neural Networks and the related concepts in layman's terms, that is to say without specialized knowledge in math or machine learning.
A simple neural network implementation in python with numpy
Functional programming is often treated as the fad of hipster mustachioed programmers, and more often is dismissed without much consideration
My opinions and ruminations on the whole debate about PHP's code of conduct
Exploration of recursion in elixir with lists
Quantified self and self-improvement have been on my radar for a few years now, and with a new year starting I finally decided to give it a serious try and see what outcomes I get from it.
TDD is not dead, not really. And it won't really ever be dead, it will change or be replaced with something better; in fact it already has, and in my MagentoTDD book we focus on Behavior Driven Development, an approach that emerged from the original TDD methodology.
I have always been fascinated with the technology concepts presented on Charles Stross book Accelerando, artificial cats, downloads of consciousness, nanotechnology, etc. but of all of them one got my particular attention; Manfred Marcx glasses.
Should Magento Connect Allow encrypted extensions
Setting up a Magento development Environment with docker
The adapter pattern also referred as the wrapper pattern, I find that wrapper is a more fitting name since it describes clearly what this pattern does; it encapsulates the functionality of a class or object into a class with a common public interfaces.
The Service layer allows modules to provide a well-defined public API and effectively hiding the business logic and preserving data integrity.
The Async Software Development Manifesto has been making the rounds on sites like HackerNews and /r/programming; and while I dont agree entirely with all that is proposed, some of the points made by the author made so much sense that I felt motivated to break them down and make some contributions of my own.
So to get started I've decided to build a micro-framework using HACK and HHVM, building a simple microframework should be a challenging enough task to illustrate some of the more interesting features of the language and at the same time it has an achievable goal so we don't end on a never ending development cycle.
A tool with so many features and implements that ends up being completely useless, in my experience the same problem can apply to software; more often than not as developers we will try to include a feature or a piece of code
Learn how to use PHPFarm to create flexible development environments that can run multiple php versions side by side
HHVM could change (is already at some extent) the way developers see and think about PHP performance, and how PHP should work. Even if you don't care and never plan to use HHVM or HACK in any of your projects the mere fact that they exist is a good thing for the PHP community.
I previously mentioned Boris, a terrific REPL for PHP, and while Boris is a great and functional REPL, is not the only available
Recently Facebook unveiled Hack, a new programming language that aims to provide developers with the tools to write and ship code quickly while catching errors on the fly.
HHVM is taking the PHP world by storm, and as PHP developer there many things to be excited about HHVM.
Traits are a mechanism for code reuse in single inheritance languages such as PHP. A Trait is intended to reduce some limitations of single inheritance by enabling a developer to reuse sets of methods freely in several independent classes living in different class hierarchies. The semantics of the combination of Traits and classes is defined in a way which reduces complexity, and avoids the typical problems associated with multiple inheritance and Mixins.
Collection of resources for learning Laravel
REPL(read-eval-print loop) can be great tools for quickly testing concepts, experimenting and getting quick feedback when learning a new language. Many languages and frameworks provide some sort of REPL like the rails console or laravel's artisan tinker.
This past weekend the Magento Community hosted the first Magento Online Hackathon, here is a quick recap of my experience.
If you are developer or system administrator working with Magento running one or more medium sized stores, chances are that you are familiar with the many challenges of optimizing and scaling Magento.
The singleton pattern is useful when we need to make sure we only have a single instance of a class for the entire request lifecycle in a web application. This typically occurs when we have global objects (such as a Configuration class) or a shared resource (such as an event queue).
The factory pattern is a class that has some methods that create objects for you. Instead of using new directly, you use the factory class to create objects. That way, if you want to change the types of objects created, you can change just the factory. All the code that uses the factory changes automatically.
Dependency Injection is a software design pattern that allows avoiding hard-coding dependencies and makes possible to change the dependencies both at runtime and compile time.
Technical Debt, chances are that you as developer have heard that term at least once before; but ask yourself do you really understand technical debt and when is appropriate to use it.
We are essential using the same technology as it was invented 30 years ago, when the few websites where just black text and a white background. Sure, we have css5, html5, javascript, server side languages, etc.
The term disrupt is nothing more than the last on a long list of buzzwords that poison the start up scene.
One of the most underestimated skills that a developer can have is the ability to make well documented, clean commits. Writing good commits can save everyone involved in project tremendous amounts of time, money and effort
I believe that information empower us to make better healthier decisions, and this has certainly proven to be true in my case after a my first month of using the Fitbit Flex
A week ago I decided to follow the example of the amazing Nathan Barry in order to try kick start this blog and work on a couple of book projects that I want to launch. The basic idea revolves around creating the habit of writing a specific amount of words every day no matter what.
Currently a few applications are fully supported like wordpress and drupal; more complex applications like Magento are still not 100% with HHVM due to bugs in the HHVM implementation.
In early 2008 Facebook began working on **HipHop**(now HPHP), a PHP execution engine; its original motivation was to convert Facebook massive PHP code base into C++ in order to save resources and increase the application performance. The original release was known as HPHPc a **PHP** to **C++** compiler.
In the last couple years, we have seen the emergence of new and exciting technologies aimed towards closing the gap between man and machine