Randalo platform: system overview Diagram

Clients

Mobile and the tournament board only talk to Public.Api
Organiser portal and admin console are trusted internal tools calling gRPC from server-only code
The admin console also serves an MCP endpoint for AI clients

Realtime & media

SignalR hubs in Public.Api for chat, tournaments and media progress
Chunked uploads through Upload.Api with a server-side SHA-256 check
MassTransit sagas drive virus scan, image variants and HLS video

Delivery & operations

.NET Aspire orchestrates every service locally
Infrastructure as code with about 100 Bicep files
OpenTelemetry collector exports traces and logs to Azure Monitor
Integration tests run on short-lived Hetzner VMs