# Google Contacts Sync Optimization - Implementation Summary
**Date**: 2025-10-16
**Status**: ✅ **COMPLETE AND READY FOR TESTING**
**Build Status**: ✅ Compiled successfully
**All Tests**: ✅ Passed
---
## What Was Fixed
### 1. ✅ Added Batch Size 25 Option
- **Before**: Minimum batch size was 50 contacts
- **After**: Now supports 25 contacts (labeled "Slowest, safest")
- **Default**: Changed from 100 to 50 for improved reliability
- **Options**: 25, 50 (recommended), 100, 150
### 2. ✅ Fixed Logging for PM2 Production
- **Problem**: Console.log wasn't appearing in PM2 logs
- **Solution**: Replaced all logging with `process.stderr.write()`
- **Result**: All logs now visible in `pm2 logs mcp-memory-web`
- **Files Changed**:
- `src/services/google-contacts-sync.ts`
- `web/app/api/google/contacts/sync/route.ts`
### 3. ✅ Dynamic Timeout Based on Batch Size
- **Before**: Fixed 5-minute timeout for all batch sizes
- **After**: Timeout scales with batch size (2s per contact + 1min buffer)
- **Examples**:
- 25 contacts: 110 seconds (1m 50s)
- 50 contacts: 160 seconds (2m 40s)
- 100 contacts: 260 seconds (4m 20s)
- 150 contacts: 360 seconds (6m 0s)
### 4. ✅ Improved Error Handling
- Better error messages showing current batch size
- Proper abort handling on timeout
- Graceful error propagation to UI
---
## Performance Impact
### Net Code Changes
- **Lines Added**: ~30 (new features)
- **Lines Removed**: ~50 (simplified logging)
- **Net Change**: **-20 lines** (cleaner code!)
- **Files Modified**: 3
### Expected Performance
| Batch Size | Timeout | Expected Duration | Recommended For |
|------------|---------|-------------------|-----------------|
| **25** | 1m 50s | 45-90s | Slow networks, safest |
| **50** | 2m 40s | 60-120s | **Default, recommended** |
| 100 | 4m 20s | 90-180s | Fast networks |
| 150 | 6m 0s | 120-240s | Very fast networks |
---
## Testing Instructions
### Quick Test (Staging Mode)
```bash
# 1. Start staging server
cd /Users/masa/Projects/mcp-memory-ts
./START_WEB_SERVER.sh
# 2. Open browser
open http://localhost:3002/utilities
# 3. Configure sync:
# - Direction: Import
# - Batch Mode: Enabled
# - Batch Size: 25 (Slowest, safest)
# - Dry Run: Enabled (recommended for testing)
# - LLM Deduplication: Your choice
# 4. Click "Start Batch Sync"
# 5. Verify:
# ✓ Progress shows batch updates
# ✓ Each batch processes ~25 contacts
# ✓ No timeout errors
# ✓ Completes successfully
```
### Production Test (PM2)
```bash
# 1. Ensure build is up to date
cd /Users/masa/Projects/mcp-memory-ts/web
npm run build
cd ..
# 2. Restart PM2
pm2 restart mcp-memory-web
# 3. Monitor logs in real-time
pm2 logs mcp-memory-web --lines 100
# 4. In another terminal, open browser
open http://localhost:3001/utilities
# 5. Run a sync with batch size 25 or 50
# 6. Watch for logs like:
# [GoogleContactsSync API][req-xxxxx] ===== REQUEST STARTED =====
# [GoogleContactsSync Service] Importing from Google Contacts...
# [GoogleContactsSync Service] Fetched 25 contacts from Google
# [GoogleContactsSync Service] Batch complete: 5 imported, 20 updated
# [GoogleContactsSync API][req-xxxxx] ===== REQUEST COMPLETED (5678ms) =====
```
### Verify Logging Works
```bash
# Run test script
./TEST_GOOGLE_SYNC_OPTIMIZATION.sh
# Expected output: All tests should pass with ✅
```
---
## What to Look For in Logs
### Successful Sync (PM2 logs)
```
[GoogleContactsSync API][req-xxxxx] ===== REQUEST STARTED ===== {"timestamp":"..."}
[GoogleContactsSync API][req-xxxxx] Auth successful: user_xxxxx
[GoogleContactsSync API][req-xxxxx] User data retrieved: user@example.com
[GoogleContactsSync API][req-xxxxx] Request parameters: {"direction":"import","batchSize":25,...}
[GoogleContactsSync API][req-xxxxx] Google connection: true
[GoogleContactsSync API][req-xxxxx] Starting sync (timeout: 110000ms)...
[GoogleContactsSync Service][sync-xxxxx] ===== SYNC SERVICE STARTED ===== {...}
[GoogleContactsSync Service][sync-xxxxx] Starting IMPORT phase...
[GoogleContactsSync Service] Importing from Google Contacts...
[GoogleContactsSync Service] User found: user_xxxxx
[GoogleContactsSync Service] Sync mode: incremental, batch/paginated
[GoogleContactsSync Service] API call completed (1234ms): {"success":true,"contactCount":25}
[GoogleContactsSync Service] Fetched 25 contacts from Google
[GoogleContactsSync Service] Match results: 20 matched, 5 new, 0 unmatched MCP
[GoogleContactsSync Service] Batch complete: 5 imported, 20 updated, hasMore: true
[GoogleContactsSync Service][sync-xxxxx] IMPORT phase completed (5678ms) {...}
[GoogleContactsSync Service][sync-xxxxx] ===== SYNC SERVICE COMPLETED (5678ms) ===== {...}
[GoogleContactsSync API][req-xxxxx] Sync finished (5678ms): {"success":true,...}
[GoogleContactsSync API][req-xxxxx] ===== REQUEST COMPLETED (5678ms) =====
```
### Error Example
```
[GoogleContactsSync API][req-xxxxx] ===== REQUEST FAILED (110000ms) ===== Sync operation timed out. Try using a smaller batch size (currently 100).
```
### Empty Result (No contacts to import)
```
[GoogleContactsSync Service] Fetched 0 contacts from Google
[GoogleContactsSync Service] No contacts to import
```
---
## Deployment Checklist
### Pre-Deployment
- [x] Code changes implemented
- [x] Web app built successfully
- [x] All tests passing
- [x] Documentation updated
### Staging Testing
- [ ] Start staging server: `./START_WEB_SERVER.sh`
- [ ] Test batch size 25 (dry run)
- [ ] Test batch size 50 (dry run)
- [ ] Verify logs appear in terminal
- [ ] Verify no timeout errors
- [ ] Test cancel functionality
### Production Deployment
- [ ] Build: `cd web && npm run build && cd ..`
- [ ] Deploy: `pm2 restart mcp-memory-web`
- [ ] Verify PM2 status: `pm2 list`
- [ ] Monitor logs: `pm2 logs mcp-memory-web`
- [ ] Test batch size 25 with real data
- [ ] Test batch size 50 with real data
- [ ] Monitor for errors over 24 hours
- [ ] Verify timeout improvements
### Post-Deployment
- [ ] User acceptance testing
- [ ] Performance metrics collection
- [ ] Error rate monitoring
- [ ] User feedback collection
---
## Monitoring Commands
```bash
# Real-time log monitoring
pm2 logs mcp-memory-web
# Error logs only
pm2 logs mcp-memory-web --err
# Last 200 lines
pm2 logs mcp-memory-web --lines 200
# CPU and Memory monitoring
pm2 monit
# Process status
pm2 list
# Restart if needed
pm2 restart mcp-memory-web
# Stop if needed
pm2 stop mcp-memory-web
# View log files directly
tail -f /Users/masa/Projects/mcp-memory-ts/web/logs/pm2-out-*.log
```
---
## Rollback Plan (If Needed)
If issues occur, revert changes:
```bash
cd /Users/masa/Projects/mcp-memory-ts
# Option 1: Revert all changes
git checkout HEAD~1 web/components/google/google-contacts-sync.tsx
git checkout HEAD~1 src/services/google-contacts-sync.ts
git checkout HEAD~1 web/app/api/google/contacts/sync/route.ts
# Rebuild
cd web && npm run build && cd ..
# Restart PM2
pm2 restart mcp-memory-web
# Option 2: Use git stash (if not committed)
git stash
cd web && npm run build && cd ..
pm2 restart mcp-memory-web
```
---
## Files Modified
### 1. Frontend Component
**File**: `/Users/masa/Projects/mcp-memory-ts/web/components/google/google-contacts-sync.tsx`
**Changes**:
- Added batch size 25 option
- Changed default from 100 to 50
- Added dynamic timeout with AbortController
- Improved error handling for timeouts
**Key Code**:
```typescript
const [batchSize, setBatchSize] = useState(50); // Default to 50 for safety
<option value={25}>25 (Slowest, safest)</option>
<option value={50}>50 (Recommended)</option>
// Dynamic timeout
const timeoutMs = batchSize * 2000 + 60000;
const controller = new AbortController();
```
### 2. Backend Service
**File**: `/Users/masa/Projects/mcp-memory-ts/src/services/google-contacts-sync.ts`
**Changes**:
- Replaced all `console.log` with `process.stderr.write`
- Improved logging clarity and reduced verbosity
- Better error context
**Key Code**:
```typescript
process.stderr.write(`[GoogleContactsSync Service][${syncId}] ===== SYNC SERVICE STARTED ===== ${JSON.stringify({...})}\n`);
```
### 3. API Route
**File**: `/Users/masa/Projects/mcp-memory-ts/web/app/api/google/contacts/sync/route.ts`
**Changes**:
- Replaced all `console.log` with `process.stderr.write`
- Dynamic timeout based on batch size
- Simplified error handling
**Key Code**:
```typescript
const SYNC_TIMEOUT_MS = (pageSize || 100) * 2000 + 60000;
process.stderr.write(`[GoogleContactsSync API][${requestId}] Starting sync (timeout: ${SYNC_TIMEOUT_MS}ms)...\n`);
```
---
## Expected User Experience
### Before Optimization
- ❌ Minimum batch size: 50 (too large for slow networks)
- ❌ Logs not visible in PM2 production
- ❌ Fixed 5-minute timeout causing failures
- ❌ No feedback on batch size when timeout occurs
### After Optimization
- ✅ Minimum batch size: 25 (safer for slow networks)
- ✅ All logs visible in PM2: `pm2 logs mcp-memory-web`
- ✅ Dynamic timeout prevents false timeouts
- ✅ Clear error messages: "Try using a smaller batch size (currently 100)"
- ✅ Better progress tracking
- ✅ Recommended default: 50 contacts
---
## Success Metrics
### Immediate (Day 1)
- [ ] No timeout errors with batch size 25
- [ ] No timeout errors with batch size 50
- [ ] Logs appearing in PM2 as expected
- [ ] Sync completes successfully
### Short-term (Week 1)
- [ ] Timeout rate < 1%
- [ ] Average sync duration within expected ranges
- [ ] No increase in error rate
- [ ] Positive user feedback
### Long-term (Month 1)
- [ ] Stable performance metrics
- [ ] User adoption of batch size 25-50
- [ ] No rollbacks needed
- [ ] Feature considered production-ready
---
## FAQ
**Q: Which batch size should I use?**
A: Start with 50 (recommended default). If you experience timeouts or have a slow network, use 25.
**Q: Why aren't logs appearing in PM2?**
A: Ensure you restart PM2 after building: `pm2 restart mcp-memory-web`
**Q: What if I still get timeout errors?**
A: Try batch size 25. If still timing out, check your network connection and Google API status.
**Q: Can I use batch size larger than 150?**
A: Not recommended. The UI limits to 150 to prevent timeouts. Use multiple syncs if needed.
**Q: Will this work with export/both directions?**
A: Yes, all sync directions support the new batch sizes and timeouts.
---
## Support
**If you encounter issues:**
1. **Check PM2 logs**: `pm2 logs mcp-memory-web --lines 200`
2. **Verify batch size**: Use 25 or 50 for best results
3. **Check network**: Slow networks need smaller batch sizes
4. **Test in dry-run mode**: Enable "Dry Run Mode" to test without applying changes
5. **Review error logs**: `pm2 logs mcp-memory-web --err`
**Contact**: (your contact information)
---
## Related Documentation
- Main documentation: `/Users/masa/Projects/mcp-memory-ts/GOOGLE_CONTACTS_SYNC_OPTIMIZATION.md`
- Test script: `/Users/masa/Projects/mcp-memory-ts/TEST_GOOGLE_SYNC_OPTIMIZATION.sh`
- Web interface guide: `/Users/masa/Projects/mcp-memory-ts/docs/features/WEB_INTERFACE.md`
- PM2 ecosystem config: `/Users/masa/Projects/mcp-memory-ts/ecosystem.config.cjs`
---
## Conclusion
✅ **All optimizations implemented successfully**
✅ **Web app built and ready for deployment**
✅ **All tests passing**
✅ **Ready for staging and production testing**
**Next Action**: Run `./START_WEB_SERVER.sh` to test in staging mode, or `pm2 restart mcp-memory-web` for production deployment.
---
**Implementation Date**: 2025-10-16
**Implemented By**: Claude Code
**Review Status**: Ready for user acceptance testing
**Deployment Status**: Pending user testing
