# Server Configuration SERVER_HOST=127.0.0.1 SERVER_PORT=8080 # Database Configuration DATABASE_URL=postgresql://username:password@localhost:5432/blockchain_api # Redis Configuration REDIS_URL=redis://127.0.0.1:6379 # JWT Configuration JWT_SECRET=your-super-secret-jwt-key-change-this-in-production JWT_EXPIRATION=86400 # Blockchain Configuration ETH_RPC_URL=https://eth.llamarpc.com POLYGON_RPC_URL=https://polygon.llamarpc.com BSC_RPC_URL=https://bsc-dataseed.binance.org # Rate Limiting Configuration RATE_LIMIT_PER_SECOND=10 RATE_LIMIT_BURST=20 # Logging RUST_LOG=info