Feature/new interest model #15
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Background
Since we updated interest model the market changed a lot. DDEX's interest rate is obviously higher than other protocols and it's time to adjust the interest model.
Other protocol's interest rate model
Compound and AAVE (click to see their curve) use jump interest rate model, which jump up at a certain interest rate.
DYDX use the formula Y=(0.1 * X) + (0.1 * X^32) + (0.3 * X^64).
We could find two key features:
Our new interest rate
Y = 0.1x + 0.2x^16 + 0.2*x^32
As you can see, basically, our curve follows dydx's curve but becomes sharp earlier than dydx's. That's because our pool size is relatively small and should reserve more space for users' withdraw.
After the adjustment, interest rate on DDEX becomes flatter and more friendly for traders.