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Architecture Styles

Complete Beginner → Advanced Syllabus (Pin-to-Pin)

🟢 LEVEL 1 — Architecture Overview

1. What is Architecture Style

Definition & purpose
Structural patterns
Organization of components
Communication patterns

2. Architecture Evolution

Monolith history
Scaling limitations
Modern architecture needs
Journey from monolith to services

🟢 LEVEL 2 — Monolithic Architecture

3. Traditional Monolith

Single codebase
Unified deployment
Shared database
Tightly coupled components

4. Monolith Basics

Advantages: simplicity, performance
Disadvantages: scalability, deployment
When to use monolith
Scaling limitations

🟡 LEVEL 3 — Layered Architecture

5. Presentation, Business, Data Layers

Layer responsibilities
Dependency directions
Data flow across layers
Testing at each layer

6. Layered Monolith

Organization patterns
Module structure
Separation of concerns
Migration path to services

🟡 LEVEL 4 — Modular Monolith

7. Module Design

Autonomous modules
Clear boundaries
Internal APIs
Database per module

8. Modular Monolith Benefits

Scalability within monolith
Team independence
Easier migration path
Testing & deployment control

🟠 LEVEL 5 — Microservices

9. Microservices Principles

Single responsibility
Independent deployment
Service boundaries
Decentralized data management

10. Service Communication

Synchronous (REST, gRPC)
Asynchronous (messaging)
Event-driven patterns
API gateways

🟠 LEVEL 6 — Event-Driven Architecture

11. Event-Driven Systems

Event producers & consumers
Event sourcing
CQRS (Command Query Responsibility Segregation)
Event ordering & exactly-once delivery

12. Real-World Event Patterns

Order processing flows
Inventory management
Workflow orchestration
Real-time analytics

🔵 LEVEL 7 — Advanced Architectures

13. Serverless Architecture

Function-as-a-Service (FaaS)
Event-driven functions
Cold starts & optimization
Vendor lock-in considerations

14. Hexagonal Architecture

Ports & adapters
Application core isolation
Testability & flexibility
Framework independence

🔵 LEVEL 8 — Clean Architecture

15. Clean Architecture Principles

Independence of frameworks
Testability
Dependency inversion
Interface segregation

16. Implementation Patterns

Entity definitions
Use case boundaries
Interface adapters
Concrete frameworks

🔴 LEVEL 9 — Choosing & Governance

17. Architecture Selection

Team size & structure
Complexity vs capability
Deployment infrastructure
Organizational constraints

18. Architecture Governance

Design review processes
Architecture decision records
Monitoring & evolution
Technical debt management

⭐ Senior Frontend Focus (Must Master)

Microservices impact on frontend: independent deployments
API gateway patterns from frontend perspective
BFF (Backend-for-Frontend) architecture
Client-side state management in event-driven systems
Handling microservices network failures gracefully
Service mesh observability from frontend
Deploying frontend independently from backend