Technology Stack

Technology Stack

fb combines C++ real-time services with C# HTTP backend services.

Service	Language	Role
Gateway, Login, Game, Bot	C++20	Client-facing TCP servers (Game runs as home or cross)
Internal, Marketplace, Matchmaking, Write-back, Log, Admin Tool	C# / .NET 8 or later	HTTP backend and background workers
server/fb	C++20	Shared library (threading, AMQP, HTTP client)
server/http	C#	Shared library (DB, Redis, MQ, migrations) — not a standalone process
crash-watch	Python	Compose / Kubernetes crash notifier (Discord optional)

Protocols and infrastructure

Layer	Technology
Client protocol	TCP + raw binary
Service-to-service API	HTTP + FlatBuffer
Events and write-back	RabbitMQ
Hot data cache	Redis
Persistent storage	MySQL (unified + per-world, sharded)
Deployment	Docker Compose (infra/compose/), Kubernetes (infra/k8s/), optional Pulumi (infra/pulumi/)

Related pages

• Architecture