Drawdown Flow

This diagram shows the complete flow when a borrower draws capital from their credit line via StructuredPool.

Process Overview

1. Authorization & Pre-Flight - Verify borrower identity and pause state
2. Interest Accrual - Calculate and apply accrued interest
3. Credit & Liquidity Validation - Ensure sufficient credit limit and available liquidity
4. Deploy Capital - Transfer funds from Reserve to borrower

Key Points

• Per-Second Interest: RAY precision (10^27) compound interest
• Interest Accrual: Interest calculated before every drawdown
• Credit Limit Enforcement: Cannot exceed available credit
• Virtual Accounting: Tranche tracks deployment without holding funds

Important Invariants

• Credit line tracking: _outstandingDebt is always ≤ creditLineSettings.drawLimit
• Liquidity guarantee: Available pool liquidity checked before deployment

Related Flows

• Repayment Flow - How borrower repays debt
• Architecture Overview - System components