Vue’s core runtime is platform-agnostic. The DOM-specific parts—document.createElement, element.setAttribute, element.appendChild—live in a separate package, @vue/runtime-dom, which is itself built on the same createRenderer API that is exposed to application developers . This means the component model, the reactivity system, the virtual DOM diffing, and the lifecycle hooks are not tied to the browser. They are…
Vue’s <Transition> component is a timing coordinator, not an animation library. It does not define how an element should fade, slide, or bounce—it defines when the classes or hooks that do those things are applied. The component wraps a single element or component, watches for its insertion or removal, and at precise moments adds and…
A Node.js application containerized naively produces an image that is both enormous and insecure. A single-stage build with COPY . . followed by npm install bakes every devDependency—TypeScript, Jest, ESLint, Webpack—into the runtime image, along with the shell and package manager that an attacker can use after a breach. The official node:20 image is built…
A reverse proxy sits between the public internet and your application containers. It terminates TLS, routes requests by hostname or path, and forwards traffic to the appropriate backend. Containerizing it means the proxy itself becomes a service in the Compose stack, with its configuration mounted or baked into the image, and its lifecycle managed alongside…
A database container is not like a web server container. The web server is stateless—kill it, restart it, and it serves the same content. The database holds state, and the entire value of the containerization exercise depends on that state surviving. Docker’s default filesystem is ephemeral: when the container is removed, everything written inside it…
Docker’s CLI plugin system is the modern, supported way to extend the docker command with new subcommands. Unlike the deprecated engine plugin system, which required registering a daemon-side plugin with a manifest and Unix socket, a CLI plugin is simply an executable binary that Docker discovers and invokes. The naming convention is the entire contract:…
Docker’s official SDKs exist because the Docker CLI is not the only way to talk to the daemon. The Docker Engine API is a RESTful HTTP interface, and the SDKs are language-specific clients that wrap it. The Python SDK (docker-py, installed as docker) and the Go SDK (github.com/docker/docker/client) are the two official options, and they…
Styling paragraphs with CSS text-indent is easy. Getting the hanging indents right is a nightmare. You guess the negative value. You guess the padding. You reload the browser fifty times trying to get the first line to line up. I built a free tool that solves this. What it does: Use cases: Privacy:100% client-side. Nothing…
Rust’s Future trait is the foundation of asynchronous programming, and its design is shaped by a single constraint that distinguishes it from every other language’s async model: futures in Rust are lazy and inert. Calling an async fn does nothing. The function returns a Future that must be actively polled to make progress . This…
Serde is the serialization framework that the Rust ecosystem standardized on, and its design is shaped by a constraint that most serialization libraries do not share: Rust has no runtime reflection. Serde does not inspect a type at runtime to discover its fields; it generates the serialization code at compile time through a derive macro,…