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Editor's pickLearn how JavaScript's call stack, event loop, promises, microtasks, and non-blocking I/O let apps handle many connections—and when workers matter.
Build a Node.js uptime monitor with timeouts, retries, HTTP status handling, email alert deduplication, and safeguards for authorized targets.
Build a Node.js GitHub repository analyzer that fetches public metadata, paginates contributor results, validates input, and handles API errors and limits.
Build a Node.js and PostgreSQL URL shortener with unique codes, redirects, click analytics, privacy safeguards, rate limiting, and deployment guidance.
Install prerequisites, create or open a Next.js project, run its development server, configure environment variables, and troubleshoot common localhost issues.
Learn how to install Node.js and npm on Windows, macOS, and Linux, verify your setup, use version managers, and fix common PATH and permission issues.