# .NET 10 Upgrade Initiative

## Quick Reference Guide

This document provides a quick overview of our .NET 10 upgrade plan. For detailed information, see [NET10-Upgrade-Plan.md](NET10-Upgrade-Plan.md).

## Current Status
- **Current Framework**: .NET 8.0
- **Target Framework**: .NET 10.0
- **Status**: Planning Phase
- **Estimated Timeline**: 10-12 weeks

## Key Objectives

### Performance Improvements
- **Memory Usage**: 10-20% reduction through improved GC
- **Throughput**: 5-15% improvement in request handling
- **Startup Time**: Faster application initialization
- **Resource Efficiency**: Better CPU and memory utilization

### Modernization Benefits
- Access to latest .NET features and optimizations
- Improved async/await performance
- Better debugging and development experience
- Enhanced security features

## Risk Assessment

### High Risk Areas 🚨
- **Orleans Clustering**: Complex distributed system upgrade
- **Database Operations**: EF Core query behavior changes
- **Third-party Dependencies**: May require updates or workarounds

### Medium Risk Areas ⚠️
- **ASP.NET Core**: Middleware and authentication changes
- **Serialization**: JSON/binary format updates
- **External Integrations**: API compatibility

### Low Risk Areas ✅
- **Domain Logic**: Framework-independent business rules
- **Pure C# Code**: Minimal framework dependencies

## Upgrade Phases

### Phase 1: Preparation (Weeks 1-2)
- [ ] Environment setup and dependency analysis
- [ ] Create upgrade branch and rollback procedures
- [ ] Update CI/CD pipelines

### Phase 2: Core Framework (Weeks 3-4)
- [ ] Update all project files to `net10.0`
- [ ] Upgrade Microsoft packages (EF Core, ASP.NET Core)
- [ ] Basic functionality validation

### Phase 3: Orleans Clustering (Weeks 5-6)
- [ ] Evaluate Orleans 10.x compatibility
- [ ] Update clustering configuration
- [ ] Validate grain persistence and communication

### Phase 4: Infrastructure (Weeks 7-8)
- [ ] Database provider updates (Npgsql, InfluxDB)
- [ ] External service integrations
- [ ] Performance benchmarking

### Phase 5: Optimization (Weeks 9-10)
- [ ] Memory management improvements
- [ ] Async/await optimizations
- [ ] Final performance tuning

### Phase 6: Production (Weeks 11-12)
- [ ] Staging environment validation
- [ ] Production deployment
- [ ] Post-deployment monitoring

## Quick Wins (Immediate Benefits)

### Code Optimizations
```csharp
// Before (.NET 8)
string result = data.ToString();

// After (.NET 10) - Better memory efficiency
ReadOnlySpan<char> span = data.AsSpan();
```

### Configuration Improvements
```json
{
  "runtimeOptions": {
    "configProperties": {
      "System.GC.Server": true,
      "System.GC.HeapCount": 8,
      "System.GC.RetainVM": false
    }
  }
}
```

## Success Metrics

| Metric | Baseline (.NET 8) | Target (.NET 10) | Improvement |
|--------|------------------|------------------|-------------|
| Memory Usage | TBD | TBD | -10-20% |
| Request Throughput | TBD | TBD | +5-15% |
| GC Pause Time | TBD | TBD | Significant reduction |
| Startup Time | TBD | TBD | Faster |

## Key Contacts

- **Technical Lead**: [Name]
- **DevOps Lead**: [Name]
- **QA Lead**: [Name]
- **Product Owner**: [Name]

## Emergency Contacts

- **Rollback Procedures**: See [NET10-Upgrade-Plan.md](NET10-Upgrade-Plan.md#rollback-plan)
- **Incident Response**: Contact DevOps on-call
- **Business Continuity**: Product Owner + DevOps Lead

## Related Documentation

- **[Detailed Upgrade Plan](NET10-Upgrade-Plan.md)**: Complete technical specification
- **[Architecture Overview](../docs/Architecture.drawio)**: System architecture diagrams
- **[Worker Processing](./Workers%20processing/)**: Background processing documentation
- **[Deployment Guide](./Workers%20processing/05-Deployment-Architecture.md)**: Infrastructure setup

## Weekly Checkpoints

### Week 1: Kickoff
- [ ] Team alignment on objectives
- [ ] Environment setup verification
- [ ] Baseline performance metrics captured

### Week 6: Mid-point Review
- [ ] Core framework upgrade completed
- [ ] Orleans clustering validated
- [ ] Go/no-go decision for Phase 2

### Week 10: Pre-production
- [ ] All optimizations implemented
- [ ] Staging environment fully tested
- [ ] Performance targets validated

### Week 12: Production Go-live
- [ ] Successful production deployment
- [ ] Performance monitoring active
- [ ] Rollback procedures documented

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## Need Help?

- **Questions**: Create issue in project repository with `upgrade-plan` label
- **Blockers**: Tag technical lead and DevOps lead
- **Schedule Changes**: Notify product owner and team lead

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**Document Version:** 1.0
**Last Updated:** November 24, 2025
**Next Review:** Weekly during upgrade
