Practical know-how on frontend, AI tools and software development.
CORS is not a mechanism that simply blocks connections to an API. It is a browser protocol built on the same-origin policy that decides whether JavaScript from one origin may read a response from another origin. In some cases the HTTP request is sent and the browser only blocks script access to the response. In other cases the browser sends an OPTIONS preflight first and uses its result to decide whether the actual request may be sent at all.
Domain-Driven Design is not a folder convention and it is not reserved for backend systems. Its purpose is to make complex business domains manageable through shared language, explicit models, and clear context boundaries. In frontend systems, DDD can be highly valuable in large product applications, but it can also become expensive architectural overkill. The key is to identify where the client truly contains domain complexity and where it is simply a presentation layer.
Docker Compose and Kubernetes solve problems at different levels. Compose is excellent for defining and running a multi-container application, especially on a single host. Kubernetes is a cluster orchestration platform that adds multi-node scheduling, self-healing, stable network services, controlled rollouts and autoscaling. The decision should not be driven by container count but by availability requirements, scale, deployment frequency and the team's ability to operate the platform.
Monorepo and multirepo solve the same organizational problem in different ways. A monorepo stores multiple applications, libraries, or services in one repository, while multirepo separates them into distinct repositories. In 2026 the choice is no longer just about repository size. Modern tooling can limit CI to affected projects, cache results, enforce architectural boundaries, and partially check out very large Git trees. The real question is not which model is universally better, but which coordination costs an organization wants to pay and where it needs shared context versus isolation.
Nine extensions, four browsers and far more than one `manifest.json` file. We show where shared code really ends, why Safari needs a separate process and which bugs are exposed only by Firefox and extension stores.
React and Vue solve similar problems with very different philosophies. React gives you a massive ecosystem and a flexible composition model, while Vue offers a more guided developer experience with approachable conventions. The right choice depends less on popularity and more on your team, your project complexity, and how much architectural freedom you actually want. This guide breaks down where each one wins so you can decide with confidence instead of following trends.
React is a UI library. Next.js is a framework built on top of React. That single distinction explains most of the confusion, because React helps you build components, while Next.js adds routing, rendering strategies, server features, optimization, and deployment conventions. If you are building a production website, the real question is not which is better, but whether React alone is enough for what you are shipping.
React and Angular represent two very different approaches to frontend development. React is a flexible UI library that lets teams assemble their own architecture, while Angular is a complete framework with strong conventions, dependency injection, routing, forms, and tooling included. This comparison helps you decide whether your project needs freedom or structure, and which choice fits your team size, hiring plans, and long-term maintenance goals.
JavaScript is the language of the web, and TypeScript is JavaScript with a type system that helps teams catch mistakes earlier and maintain larger codebases with more confidence. For small scripts and quick prototypes, plain JavaScript may be enough. For serious frontend applications, TypeScript often pays for itself through better tooling, safer refactors, and clearer contracts between modules. The right choice depends on project size, team experience, and how long the code needs to live.
