docs/archive/SETINTERVAL_BUG_VERIFIED.md

# ✅ setInterval Resource Leak Bug - VERIFIED FIXED

**Date:** 2025-11-24  
**Status:** ✅ **ALREADY FIXED**

---

## 🐛 Bug Description

The `setInterval` started in the `AutonomousTaskEngine` constructor was not stored and could not be cleared, causing a resource leak. Even after calling `stop()`, the interval continued running indefinitely.

---

## ✅ Verification

**Location:** `apps/backend/src/mcp/cognitive/AutonomousTaskEngine.ts`

**Line 69:** ✅ Property added to store interval ID
```typescript
private memoryOptimizationIntervalId: NodeJS.Timeout | null = null;
```

**Line 91:** ✅ Interval ID is stored when created
```typescript
this.memoryOptimizationIntervalId = setInterval(() => {
    this.queue.enqueue({
        type: 'memory_optimization',
        payload: { mode: 'nightly_consolidation' },
        baseScore: 80,
        isMaintenanceTask: true
    }, 80);
}, 1000 * 60 * 60 * 24);
```

**Lines 128-133:** ✅ Interval is cleared in `stop()` method
```typescript
stop() {
    this.active = false;
    // Clear the memory optimization interval to prevent resource leak
    if (this.memoryOptimizationIntervalId !== null) {
        clearInterval(this.memoryOptimizationIntervalId);
        this.memoryOptimizationIntervalId = null;
    }
}
```

---

## ✅ Conclusion

**Status:** ✅ **BUG IS ALREADY FIXED**

The code correctly:
1. Stores the interval ID in a class property
2. Clears the interval when `stop()` is called
3. Prevents resource leaks

No further action needed for this bug.