Articles

Analyses approfondies d’ingénierie

Des analyses approfondies et pratiques sur le fonctionnement des logiciels et la façon dont les équipes les construisent, avec la réponse d’abord, un schéma quand il aide et des sources pour chaque affirmation.

IA et ingénierie27 oct. 20269 min de lectureAnglais

AI Makes Writing Code Cheaper. It Does Not Make Engineering Judgment Cheaper.

AI assistants cut the cost of producing code, but not of verifying, reviewing and owning it. What the research shows, where the bottleneck moves and how teams should adapt.

AI
Teams
Code Review

Leadership technique20 oct. 202612 min de lectureAnglais

The Metrics That Make Engineering Organizations Worse

Lines of code, story points and pull-request counts reward the wrong behavior. Why vanity metrics backfire, and how to measure outcomes, flow and health without gaming.

Teams
Metrics
Productivity

JavaScript13 oct. 202610 min de lectureAnglais

Race Conditions in JavaScript: When Single-Threaded Code Is Not Safe

JavaScript runs one thing at a time, yet async code still races. Lost updates, stale responses and double submits, and the patterns that prevent each one.

JavaScript
Async
Concurrency

Leadership technique6 oct. 202611 min de lectureAnglais

Technical Debt Is Not the Enemy. Unpriced Technical Debt Is.

Debt is a tool when you know its cost. How to measure technical debt through change cost, risk and toil, decide what to pay down, and talk about it in terms the business funds.

Teams
Architecture
Maintenance

JavaScript29 sept. 202610 min de lectureAnglais

From Call Stack to Heap: How JavaScript Manages Memory

Where values live, how the garbage collector decides what to free, why reachability is the only rule that matters, and how to find and fix the leaks it can’t.

JavaScript
Runtime
Performance

Architecture et systèmes22 sept. 202610 min de lectureAnglais

Distributed Systems Fail in the Gaps Between Teams

Most outages start where one team’s service meets another’s. Contracts, timeouts, retries and ownership that stop one slow dependency from taking everything down.

Distributed Systems
Reliability
Architecture

JavaScript8 sept. 20268 min de lectureAnglais

How Promises and async/await Actually Work

Promise states, chaining, adoption, error propagation and microtask timing, then what async/await compiles to. With the ordering rules and the mistakes they explain.

JavaScript
Async
Runtime

JavaScript1 sept. 20269 min de lectureAnglais

Scope, Hoisting and the Temporal Dead Zone in JavaScript

The five kinds of scope in JavaScript, how name lookup works, what hoisting really does to var, let, const, functions and classes, and why the temporal dead zone exists.

JavaScript
Fundamentals
Language Internals

Architecture et systèmes25 août 202613 min de lectureAnglais

The Architecture Decisions That Matter More Than Your Tech Stack

Coupling, boundaries, data ownership and independent deployment decide how fast a system can change. How to recognize those decisions and make them deliberately.

Architecture
System Design
Teams

JavaScript18 août 20269 min de lectureAnglais

JavaScript’s this Keyword, Four Rules and One Exception

this depends on how a function is called, not where it is written. Four call-site rules, the arrow function exception and how to fix a lost this in callbacks.

JavaScript
Frontend
Fundamentals

JavaScript11 août 202610 min de lectureAnglais

The Event Loop Is Not What You Think: Tasks, Microtasks and Order

How the call stack, task queue, microtask queue and rendering fit together, how to predict execution order, and why a busy loop or a promise chain can freeze the page.

JavaScript
Runtime
Performance

JavaScript4 août 20267 min de lectureAnglais

Why JavaScript Equality Is More Complicated Than == vs ===

JavaScript has four equality algorithms. How == coerces, why NaN and -0 break ===, what Object.is and SameValueZero do, and which one Map, Set and includes use.

JavaScript
Fundamentals
Language Internals

JavaScript28 juil. 20267 min de lectureAnglais

What Happens When a Function Runs: Execution Contexts and Closures

Execution contexts, lexical environments, the scope chain and closures, explained as one model, with the loop and memory pitfalls it explains.

JavaScript
Fundamentals
Language Internals

JavaScript21 juil. 20267 min de lectureAnglais

How JavaScript Modules Work: Scope, Live Bindings and Cycles

ES modules and CommonJS load, share and evaluate code differently. Live bindings, singletons, circular imports and the rules that decide what you actually get.

JavaScript
Modules
Node.js

JavaScript14 juil. 20267 min de lectureAnglais

The Hidden Cost of Mutable State in JavaScript

Aliasing, shallow copies and in-place methods cause bugs that show up far from their cause. How references work, and when to copy, freeze or isolate state.

JavaScript
Fundamentals
State Management

JavaScript7 juil. 20268 min de lectureAnglais

What Happens When You Read a Property in JavaScript

Property descriptors, getters, setters and the prototype chain explained through one lookup algorithm, with the shadowing rules that surprise people.

JavaScript
Fundamentals
Language Internals