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Hyveon

A cost-efficient, multi-game dedicated server platform on AWS Fargate with a local management UI and a fully serverless Discord bot. Servers only run — and only cost money — while somebody is playing; the rest of the time the account is silent except for a handful of near-free Lambdas.

What you get​

  • On-demand Fargate tasks per game (no persistent ECS service, no idle cost).
  • EFS with per-game access points so each world is isolated yet persistent.
  • Auto-DNS — a Lambda UPSERTs {game}.{yourdomain} on task start and DELETEs it on stop. HTTPS-fronted games terminate TLS via an in-task Caddy sidecar (Let's Encrypt automatic HTTPS) — no load balancer or ACM certificate for game traffic. (The Discord custom domain is separate: it fronts a Lambda Function URL with CloudFront and does use an ACM certificate — see Terraform.)
  • Watchdog Lambda that stops servers after a configurable idle window.
  • Packaged Electron desktop app (Nest.js backend + React dashboard) to start/stop, edit config, stream logs, and track costs — no HTTP server, the renderer talks to the backend over Electron IPC.
  • Serverless Discord bot — two Node.js Lambdas plus DynamoDB and Secrets Manager handle every slash command; no 24/7 bot process.

Choose your path​

The rest of the site is organised around three roles. Pick the one that matches what you're doing right now:

  • Setup guide — from a blank AWS account to a running game server, in order.
  • User guide — day-to-day operation: starting/stopping servers from the dashboard or Discord, reading the cost panel, checking logs.
  • Maintainer guide — working on the code: monorepo layout, tests, lint, CI, release/deploy mechanics, load-bearing invariants not to break.
  • Submodule guide — the pattern of wrapping this repo as a git submodule inside a private parent repo that holds terraform.tfvars, server_config.json, state, and anything else secret.

Component reference​

Deep-dives on each piece, for when the guides hand-wave past something:

  • Architecture overview — the diagram below in full, with every arrow annotated.
  • Terraform — every .tf file, variables, outputs, and AWS services touched.
  • Management app — the Nest.js API, React dashboard, and @hyveon/shared library.
  • Lambdas — the five Node.js Lambdas (interactions, followup, update-dns, watchdog, efs-seeder).

High-level architecture​

High-level architecture

Run Terraform from your laptop (or a CI runner); after that the control plane is the dashboard, the Discord bot, or EventBridge schedules. No persistent server process — only the Fargate tasks themselves cost money, and only while they're running.

For the full breakdown (Discord bot internals, control-loop Lambdas, and the /server-start sequence) see the architecture overview.

Repository map​

The repository root is the npm-workspaces root — one package.json at the top installs every workspace below in a single npm install.

Hyveon/
├── app/                        # Electron desktop app (Nest.js + React)
│   └── packages/
│       ├── shared/             # @hyveon/shared
│       ├── cloud-aws/          # @hyveon/cloud-aws — AWS implementations of the cloud-agnostic contracts
│       ├── desktop-main/       # @hyveon/desktop-main (Nest.js IPC microservice)
│       ├── desktop-preload/    # @hyveon/desktop-preload — contextBridge preload script (window.hyveon)
│       ├── web/                # @hyveon/web   (React + Vite renderer)
│       └── lambda/
│           ├── interactions/   # Discord Function URL entry point
│           ├── followup/       # async ECS work + Discord PATCH
│           ├── update-dns/     # Route 53 on task state change
│           ├── watchdog/       # idle detection + auto-stop
│           └── efs-seeder/     # writes declarative file_seeds to a game's EFS volume
├── terraform/                  # all AWS infra (VPC, ECS, EFS, Lambdas, DDB...)
├── scripts/                    # @hyveon/scripts — init-parent.ts submodule scaffolder
├── build/                      # icon source art + generator for packaging
├── docs/                       # this site
├── openspec/                   # OpenSpec change proposals/specs for this repo
├── electron.vite.config.ts     # electron-vite build config (main/preload/renderer)
├── electron-builder.yml        # packaged-installer config
└── README.md