Chat Backend

The Chat Backend is the authoritative real-time system.

It handles:

• WebSocket lifecycle
• Identity binding
• Message routing
• Persistence
• Moderation hooks

Responsibilities

• Authenticate socket connections
• Maintain channel membership
• Fan out messages
• Enforce rate limits

Out of Scope

• UI rendering
• OAuth flows
• Page routing

Tech Stack

• NestJS
• Socket.IO
• Prisma
• Redis
• MariaDB / Postgres

Core Modules

• ChatGateway
• ChatService
• PresenceService
• ModerationService

Related Docs

• → Architecture
• → Gateway
• → Auth
• → Scaling