Web Development

Research Disclaimer This tutorial is based on: W3C WebAuthn Level 3 Specification (October 2024) FIDO2/CTAP2 specification (FIDO Alliance, 2023) @simplewebauthn/server v9.0+ (Node.js library) py_webauthn v2.0+ (Python library) Web Crypto API (W3C standard) NIST SP 800-63B Digital Identity Guidelines All code examples follow documented WebAuthn best practices and are production-ready. Security analysis is based on FIDO Alliance and W3C standards. Examples tested on Chrome 119+, Safari 17+, Firefox 120+, Edge 119+. ...

Unlocking Real-Time Capabilities with WebSockets: A Production Guide Research Disclaimer: This guide is based on Socket.IO v4.6+, ws v8.16+, Express.js v4.18+, and Redis v4.6+ official documentation. All code examples follow production-tested patterns for WebSocket communication, including authentication, scalability, and error handling. WebSocket connections require proper security measures and connection management to prevent resource exhaustion. WebSockets enable full-duplex communication over a single TCP connection, eliminating the overhead of HTTP polling. This guide provides production-ready implementations for real-time chat, live updates, collaborative editing, and scalable WebSocket architectures with Socket.IO, Redis, and JWT authentication. ...