Software design focuses on making systems work, but it has no discipline for the opposite question: what should our systems never do? Bugs and security vulnerabilities keep breaking the assumption that software only does what we program it to do. Topics covered: Every module has a list of things it should never do. Most teams
Where does AI coding assistance actually pay off, and where does it quietly cost you more time than it saves? I let Claude generate four hard questions about using LLMs in software Where does AI coding assistance actually pay off, and where does it quietly cost you more time than it saves? I let Claude
REST has always had a weak spot: complex queries. GET can’t carry enough data in a URL, so most teams fake it with POST — and lose caching, safe retries, and idempotency in the process. HTTP just got a fix: a new verb called QUERY. This video reacts to a LinkedIn post by Martin Forstner,
Adding features feels productive. Often, it is not. Reacting to Oskar Dudycz’s article “Addition by Subtraction in Software Design,” I go through his own admission of over-engineering his contract-testing library, Strictland – and why the fix wasn’t adding more options, it was removing them. This is a commentary on: https://www.architecture-weekly.com/p/addition-by-subtraction-in-software What we cover: Two rules
Most developers use AI assistants the same way they use a search engine: ask, get an answer, move on. That habit is costing them the most valuable thing AI can actually do. The real power isn’t in generation — it’s in conversations that build understanding before you write a single line of code. Topics covered:
Most developers are leaving a lot on the table with AI coding assistants — not because the tools aren’t good, but because of a few fixable mistakes I keep seeing in real teams.In this video I cover three common mistakes and how to avoid them: Plus a bonus fourth mistake: only using AI for code
A recent post by Simon Wardley makes the point that the transition to AI will take a while because it requires practices to emerge and be accepted, to co-evolve with AI. Alex analyzes and comments this theory. Links:
Pure functions are functions that return the same value for the same input values, and don’t change the state of the system. Idempotency refers to functions that make the change a single time, if receiving the same relevant values – either input arguments or an identifier. These two concepts are related in that they help
After going through our courses on clean code, refactoring, TDD, or software design, a common question is “how do I convince my colleagues to follow these practices?”. The answer is more subtle than you might expect, and it involves an interesting trip to the patterns community.
We’ve often noticed how people starting with a technique imbue it with a lot of potential to solve all the problems of software development (* exaggerating for effect). This is rarely the case. Let’s look in particular at domain modeling, and how bounded contexts are not 1-to-1 to business domains, inspired by another excellent article written by Mattias Verraes.
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