In-depth articles, tutorials, and guides on Security & Architecture — covering everything from fundamentals to advanced patterns.
Choosing between a model API, open-weight deployment, or a custom model is not a leaderboard exercise. It determines a product’s privacy boundary, operational ownership, safety controls, latency, portability, and long-term cost.
Optimistic UI dramatically improves perceived performance by applying state changes before the server confirms them. But this requires a robust rollback strategy for when the server rejects the change — and getting rollbacks right is where most implementations fall short.
Most UI bugs are not logic errors — they are state management errors. By modeling UI states explicitly using finite state machines, you can make entire classes of bugs impossible to represent in your code before they ever reach production.
Race conditions are not just a backend problem. They happen in frontend state management whenever multiple async operations can resolve in an unpredictable order — and they are responsible for some of the most subtle and hard-to-reproduce bugs in React applications.
Event sourcing is typically discussed in the context of backend systems, but the same pattern — deriving current state by replaying a log of past events — offers powerful benefits for complex frontend state management, collaborative features, and time-travel debugging.
CORS errors are among the most common frustrations in web development. Understanding why preflight requests exist and how the browser decides to send them will save you hours of debugging.
Prototype pollution is a class of JavaScript vulnerability where an attacker modifies Object.prototype or another shared prototype — causing unexpected behaviour across an entire application. It shows up most often in utility libraries, and it's more dangerous than it looks.
A Content Security Policy tells the browser which sources it is allowed to load resources from. It is one of the most effective defences against XSS attacks — and one of the most poorly understood headers in web security.
CSRF and XSS are two of the most common web security vulnerabilities, yet they are frequently confused. They attack different things, exploit different trust relationships, and require different defences.