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README.md

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+# 🗺️ Rust Vector Map
+
+A high-performance, GPU-accelerated vector map renderer built with **Rust**, **WebAssembly**, and **ScyllaDB**.
+
+## 🚀 Features
+
+- **GPU Rendering**: Uses `wgpu` to render millions of vertices (buildings, roads, parks) directly on the GPU.
+- **WebAssembly**: Core logic runs in Wasm for near-native performance in the browser.
+- **Scalable Backend**: Powered by **ScyllaDB** to handle massive OpenStreetMap datasets with low latency.
+- **Custom Vector Tiles**: Efficient binary format for fast network transfer and parsing.
+- **Interactive**: Smooth zooming, panning, and dynamic level-of-detail.
+
+## 🏗️ Architecture
+
+- **Frontend**: Rust (`winit`, `wgpu`, `wasm-bindgen`) compiled to WebAssembly.
+- **Backend**: Rust (`Axum`) REST API serving tile data.
+- **Database**: ScyllaDB (Cassandra-compatible) storing processed OSM data.
+- **Importer**: Custom Rust tool (`osmpbf`) to ingest `.osm.pbf` files.
+
+## 🛠️ Getting Started
+
+### Prerequisites
+
+- [Rust](https://rustup.rs/) (latest stable)
+- [Docker](https://www.docker.com/) & Docker Compose
+- `wasm-pack`: `cargo install wasm-pack`
+
+### 1. Start the Database
+
+Start ScyllaDB in a container:
+
+```bash
+docker compose up -d scylla
+```
+
+### 2. Import Data
+
+1.  Download an OpenStreetMap PBF file (e.g., from [Geofabrik](https://download.geofabrik.de/)).
+2.  Save it as `sample.osm.pbf` in the project root.
+3.  Run the importer:
+
+```bash
+cargo run --bin importer
+```
+
+*Note: This process may take a few minutes depending on the size of the PBF file.*
+
+### 3. Run the Application
+
+**Option A: Docker (Recommended)**
+
+Build and run the entire stack:
+
+```bash
+docker compose up --build
+```
+
+**Option B: Manual (Development)**
+
+1.  **Build Frontend**:
+    ```bash
+    cd frontend
+    wasm-pack build --target web --out-name wasm --out-dir ../backend/static
+    cd ..
+    ```
+
+2.  **Run Backend**:
+    ```bash
+    cargo run --bin backend
+    ```
+
+### 4. View the Map
+
+Open your browser and navigate to:
+
+```
+http://localhost:3000
+```
+
+## 📂 Project Structure
+
+- `/backend`: Axum server and database logic.
+- `/frontend`: Rust Wasm application and rendering engine.
+- `/importer`: Tool for parsing and ingesting OSM data.
+- `docker-compose.yml`: Service orchestration.
+
+## 📜 License
+
+MIT License

docker-compose.yml

@@ -8,7 +8,7 @@ services:
       - "9042:9042"
       - "9160:9160"
       - "10000:10000"
-    command: --smp 1 --memory 2G --overprovisioned 1 --api-address 0.0.0.0 --max-memory-for-unlimited-query-soft-limit 1073741824 --tombstone-warn-threshold 10000000
+    command: --smp 1 --memory 4G --overprovisioned 1 --api-address 0.0.0.0 --max-memory-for-unlimited-query-soft-limit 1073741824 --tombstone-warn-threshold 10000000
     volumes:
       - scylla_data:/var/lib/scylla