## 7. Performance Optimizations

### 7.1 Batch Directory Operations
```java
public class BatchDirectoryOperations {
    private final DirectoryLeaseManager leaseManager;
    
    public List<SmbFile> batchExists(List<String> paths) {
        // Group paths by parent directory
        Map<String, List<String>> pathsByParent = paths.stream()
            .collect(Collectors.groupingBy(this::getParentPath));