Backend / Full StackDifficulty:AdvancedSuitable for:Frontend Advanced / Full-Stack Developer

Node.js

Connect frontend and backend using JavaScript

What problem does this technology solve?

Node.js runs JavaScript on the server, ideal for building APIs, real-time communication systems, and toolchains. Its core lies in the event loop and asynchronous I/O; mastering these mechanisms is essential to writing non-blocking, scalable services.

If you're unsure whether to invest time in this, check your target job descriptions first. See how frequently the technology appears and what role it plays in projects, then decide on your learning priority.

Core Knowledge Points

Event Loop and Asynchronous Programming Model
Module System and Package Management
Build HTTP Services and Middleware
Database Connection and Interface Layering
Basics of Process Management and Deployment

Complementary Content

Node.js Tutorials, Examples, and Case Studies

Starting with a specific problem is easier to stick with than reading through the entire documentation.

Technical Tutorials

Node.js2026-08-20

Understand Node.js's Event Loop and Asynchronous Patterns

Understand the execution order of macrotasks and microtasks to avoid writing interface code that blocks the event loop.

11 minutesRead full article

Code Example

Node.jsjavascript

Node.js API Layering Example

Routes handle only forwarding; business logic resides in the service layer to facilitate unit testing.

import { Router } from "express";
import { listArticles } from "../services/article.js";

Project Case Studies

Inbox and Real-Time Notifications

In-app messaging service based on long-lived connections, supporting push notifications and unread message counts.

Ideal for apps that need to reach users instantly.

Node.js

Continue exploring other technical directions