#sistem tasarımı
#yazılım mimarisi
#ölçeklenebilirlik
#veritabanı tasarımı
#next.js mimarisi
#postgresql optimizasyon
#Clean Architecture
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Coding is 40% of the Job: Designing a Scalable "Unified Inbox" & Senior Software Architecture
Writing code is not enough; comprehensive guide on how senior software architecture is designed using Domain-Driven Design (DDD), Clean Architecture, Caching layers, and Micro-Frontend strategies.
Senior software engineering is about building sustainable, decoupled, and scalable architectures that thrive under 10x growth.
1. Core Pillars: Clean Architecture & Decoupling
- **Domain Isolation:** Business logic must remain independent of UI frameworks and database adapters.
- **Dependency Inversion:** High-level policy modules depend on abstractions rather than low-level details.
- **Single Responsibility:** Each module should possess exactly one reason to change.
2. 3-Tier Caching Architecture
- **Edge Layer:** Static CDN assets and ISR page caches.
- **Application Memory:** In-memory TTL caches for volatile session states.
- **Database Indexes:** Compound and Time-Series query optimization.
3. Architecture Decision Records (ADR)
Documenting architectural pivots ensures long-term team alignment.
typescript
# ADR 003: Adoption of Next.js App Router
Status: Accepted
Context: Reduce client bundle footprint on data-heavy dashboards.
Decision: Migrate to React Server Components.4. Conclusion
Senior engineering is the discipline of decomposing complexity into straightforward, maintainable modules.
