api/ (ElysiaJS+Bun WS gateway skeleton), worker/ (Rust, Redis dirty-chunk stream consumer behind a swappable RenderBackend trait), frontend/ (ElysiaJS+Pug+Tailwind4+Alpine, one server-rendered page) — all three verified running locally. docker-compose wires them up with postgres, redis, minio (rendered tile/mesh object storage), and Caddy as reverse proxy.
2.2 KiB
MCMapper-Backend
Map-render backend for MCMapper-Mod. Does all the heavy lifting a thin in-game mod shouldn't: persists world state, renders 2D tiles and 3D meshes, relays chat, and serves the web map viewer — instead of the MC server itself burning CPU/RAM on rendering the way Bluemap/Dynmap do.
Services
Three independently-deployable services, each its own docker-compose service:
api/— ElysiaJS on Bun. The I/O layer: WS gateway for mod connections, chat relay, chunk store, marker/waypoint sharing, admin config, region export, tile/mesh serving.worker/— Rust. CPU-bound rendering: tile rasterization and chunk meshing, consumed off a Redis dirty-chunk stream. Stateless — scale it withdocker compose up --scale worker=N, or run instances on separate hardware pointed at the same Postgres/Redis/MinIO over a private network. Rendering strategy (cpu/gpu/hybrid) is config-selectable behind aRenderBackendtrait; onlycpu(rayon) exists so far —gpu/hybrid(wgpu) land in Phase 8.frontend/— ElysiaJS + Pug + Tailwind 4 + Alpine.js. The public-facing pages (map viewer, chat, admin panel). Stateless — no DB access, callsapifor anything server-rendered; the browser's own live map/chat/tile traffic talks toapidirectly, not proxied through here.
Plus postgres (source chunk data, accounts, chat history, config, render-artifact metadata
pointers), redis (dirty-chunk queue, pub/sub, link-code TTLs), minio (S3-compatible object
storage for the actual rendered tile PNGs and mesh binaries — kept out of Postgres so backups
stay free of large binaries and remote worker instances have a shared place to write output),
and caddy (reverse proxy: /ws + /api/* → api, everything else → frontend).
Postgres/Redis/MinIO are never exposed publicly — only reachable on the compose network or a
private network (VPN/Tailscale/LAN) for remote worker instances.
Running
docker compose up
api on :3000, frontend on :3001, both behind Caddy on :80. First boot pulls/builds all
images; worker starts polling an empty Redis stream until Phase 1 gives it something to do.
Attribution
See THIRD_PARTY_NOTICES.md.