# trading_service Core execution engine for order placement, position keeping, risk integration, and real-time P&L tracking. ## Key Types - `TradingServiceImpl` -- main gRPC service - `OrderExecutor` -- high-throughput order handling - `PositionManager` -- real-time position and P&L tracking - `RiskIntegration` -- pre-trade and post-trade compliance ## gRPC Endpoints - `PlaceOrder` -- submit new orders - `CancelOrder` -- cancel existing orders - `GetPosition` -- query current positions - `SubscribeMarketData` -- market data feeds - `GetPnlUpdates` -- real-time P&L updates ## Configuration - `GRPC_PORT` -- gRPC listen port - `DATABASE_URL` -- PostgreSQL connection string - `TLS_ENABLED` -- enable TLS 1.3 (default: false) - `TLS_CERT_PATH`, `TLS_KEY_PATH`, `TLS_CA_PATH` -- TLS certificates - `TLS_REQUIRE_CLIENT_CERT` -- mutual TLS (default: false) ## Testing ```bash SQLX_OFFLINE=true cargo test -p trading_service --lib ```