Cloud-Native Domain Layer 3: Domain Constraints Domain Constraints → Design Implications | Domain Rule | Design Constraint | Rust Implication | |-------------|-------------------|------------------| | 12-Factor | Config from env | Environment-based config | | Observability | Metrics + traces | tracing + opentelemetry | | Health checks | Liveness/readiness | Dedicated endpoints | | Graceful shutdown | Clean termination | Signal handling | | Horizontal scale | Stateless design | No local state | | Container-friendly | Small binaries | Release optimization | --- Critical Constraints Stateless De…