Spring GDS 25th Anniversary
A logistics company that ships to 190 countries built something to ship to itself.
Node.js
What is Node.js?
Node.js is a runtime that runs JavaScript outside the browser, on the server. Before it existed, JavaScript lived only on the front end. Node moved it to the backend, so a team can build both halves of an application in one language.
It runs on Google's V8 engine and uses a single-threaded, event-driven, non-blocking model. In plain terms, Node can handle thousands of simultaneous connections without spinning up a thread for each one, because it does not sit and wait while one task finishes before starting the next. That makes it strong for I/O-heavy work like APIs, real-time chat, and streaming, where the server spends most of its time waiting on the network or a database. A live dashboard pushing updates to thousands of connected users is exactly the kind of load Node handles well.
The flip side is CPU-bound work. Heavy number crunching can block that single thread, so Node is a poor fit for tasks better suited to a language like Go or Rust. Against traditional backends like PHP, the draw is the shared language and the rich npm ecosystem. Against newer runtimes, Node's edge is maturity and a community that has stress-tested it in production for years.
Node.js at Dallonses
Node runs a lot of what we ship. APIs, serverless functions, the backend behind web applications. Sharing one language across front end and back lowers the cost of context-switching for the people building a product, and it lets a tighter team move faster without losing the thread.
In our web development work, Node usually pairs with TypeScript for type safety and a deliberate choice of framework per project. We care about the parts that do not show up in a demo. How errors get handled, how the service behaves under real traffic, how easy it is for the next developer to read. Node makes it easy to ship something quickly and just as easy to ship a mess, so the discipline lives in how we structure the code, not the runtime itself.
Need a backend that holds up when real traffic arrives? Let's build it right.
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