Digital Signage (React, Electron, Node.js, WebSocket, Redis, S3) overview

A digital signage content management and display platform combining React for the web-based content designer and Electron for the kiosk display application running on embedded PCs or Raspberry Pi devices. WebSocket connections via Socket.IO push real-time content updates, scheduling changes, and emergency overrides to displays without polling. Redis manages display state and pub/sub channels for fleet-wide content synchronization. S3 stores media assets (images, videos, HTML widgets) with local caching on display devices for offline resilience. Node.js orchestrates the content scheduling engine. Designed for digital signage companies managing thousands of screens across retail, hospitality, and corporate environments. The tradeoff is device fleet management complexity and ensuring reliable content playback during network outages.