Oracle Integration Patterns

Design robust oracle integration for DeFi protocol.

Oracle Requirements:
- Data Types: ${{DATA_NEEDS}}
- Update Frequency: ${{UPDATE_FREQUENCY}}
- Accuracy Requirements: ${{ACCURACY_NEEDS}}
- Fallback Strategy: ${{FALLBACK_APPROACH}}

Oracle Integration:

1. **Oracle Selection**
   - Chainlink
   - Pyth
   - Band Protocol
   - Custom solutions

2. **Integration Patterns**
```solidity
// Primary oracle
// Fallback oracle
// Price aggregation
// Staleness checks
```

3. **Price Validation**
   - Staleness checks
   - Deviation limits
   - Sanity bounds
   - Multi-source validation

4. **TWAP Implementation**
   - Window selection
   - Update mechanics
   - Gas considerations
   - Manipulation resistance

5. **Fallback Mechanisms**
   - Oracle priority
   - Failover logic
   - Emergency pricing
   - Manual override

6. **Security Measures**
   - Manipulation resistance
   - Flash loan protection
   - Price deviation alerts
   - Circuit breakers

7. **Monitoring**
   - Oracle health tracking
   - Latency monitoring
   - Deviation alerts
   - Cost tracking

Include oracle wrapper contracts and monitoring setup.