WebSockets

Summary

Applying persistent, bidirectional connections at an application level — powering live chat, collaborative editing, and real-time dashboards beyond the basic API.

How to Learn This

1Build a small real-time feature (live chat or live counter) end-to-end.
2Handle reconnection logic when a WebSocket connection drops.
3Compare WebSockets to Server-Sent Events for one-way real-time updates.

Performance Architecture

PWA

More topics in Advanced Topics

PWA Service Workers IndexedDB Offline Apps WebAssembly basics Micro Frontends Module Federation Internationalization (i18n)Localization (l10n)Feature Flags Monitoring (Sentry)Analytics (Google Analytics, Mixpanel)Security (XSS, CSRF, CSP)

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