Router Tolerance

Overview

Router tolerance is a safety mechanism that allows for minor discrepancies between expected and actual returns when interacting with components. This accounts for potential rounding differences in share/asset calculations across different protocols.

Configuration

• Set by Registry Owner via setTolerance() function

• Can be configured independently for each Router

• Default value is 1 (smallest possible unit)

• Should be kept minimal to ensure tight bounds on returns

Example Usage

// If actual shares returned are within tolerance of expected, transaction succeeds
if ((sharesReturned + tolerance) < expectedShares) {
    revert ErrorsLib.InsufficientSharesReturned();
}

Governance Process

1. Registry Owner identifies need for tolerance adjustment

2. Proposes new tolerance value based on component behavior

3. Executes setTolerance() on target Router:

router.setTolerance(newToleranceValue);

Tolerance values should be carefully considered as they represent acceptable slippage in component interactions. Higher values provide more flexibility but reduce precision of return validation.