System Design and Application Architecture

Introduction to System Design
- Importance of System Design
- Key Principles and Terminology
- Types of Systems (Monolithic, Distributed, etc.)
Basic Concepts in Application Architecture
- Understanding Client-Server Model
- Three-tier and N-tier Architectures
- Introduction to Microservices and SOA (Service-Oriented Architecture)
Data Structures and Algorithms for System Design
- Essential Data Structures
- Fundamental Algorithms (Sorting, Searching, etc.)
- How to Choose the Right Data Structure
Networking Basics
- IP Addresses, Ports, and Protocols
- HTTP/HTTPS and RESTful APIs
- Basics of Web Sockets and Real-Time Communication
Databases Basics
- Relational vs. Non-Relational Databases
- Database Design Fundamentals
- SQL Basics and NoSQL Overview
Scalability Basics
- What is Scalability? (Vertical vs. Horizontal)
- Load Balancing Basics
- Introduction to Caching

Advanced Application Architecture
- Microservices vs. Monolithic Applications
- Event-Driven Architectures
- Serverless Architectures
Designing RESTful APIs
- Principles of REST
- CRUD Operations and Status Codes
- Authentication and Authorization (OAuth, JWT)
Data Consistency and Integrity
- ACID Properties
- CAP Theorem (Consistency, Availability, Partition Tolerance)
- Eventual Consistency Models
Intermediate Database Concepts
- Database Indexing and Optimization
- Data Partitioning and Sharding
- Database Replication and Failover
Caching Strategies
- Types of Caching (In-memory, Distributed, etc.)
- Cache Invalidation and Expiry
- Tools (Redis, Memcached)
Concurrency and Parallelism
- Threading and Async Programming
- Locks and Synchronization Mechanisms
- Multi-threaded Applications and Race Conditions
Messaging and Queueing Systems
- Introduction to Message Queues (Kafka, RabbitMQ)
- Asynchronous Communication
- Pub/Sub Model

Microservices Deep Dive
- Service Discovery and Registry
- API Gateway and BFF (Backend-for-Frontend)
- Circuit Breakers and Resilience Patterns
Advanced API Design
- GraphQL vs. REST APIs
- Designing for Extensibility and Scalability
- API Versioning and Documentation
Distributed Systems
- Fundamentals of Distributed Computing
- Distributed Transactions and Consensus Algorithms
- Challenges (Data Consistency, Fault Tolerance, etc.)
Security in System Design
- Authentication and Authorization at Scale
- Secure API Design and Data Encryption
- Common Security Threats (XSS, CSRF, SQL Injection)
Advanced Data Processing
- ETL (Extract, Transform, Load) Pipelines
- Big Data Concepts and Processing Tools (Hadoop, Spark)
- Data Warehousing and Data Lakes
Monitoring and Observability
- Logging, Metrics, and Tracing
- Incident Response and Root Cause Analysis
- Tools for Monitoring (Prometheus, ELK Stack, Grafana)
Scaling Strategies
- Autoscaling and Load Balancers
- Edge Computing and Content Delivery Networks (CDNs)
- Geographic Distribution and Multi-region Deployments

Designing for High Availability and Reliability
- Principles of High Availability
- Disaster Recovery and Backup Strategies
- Chaos Engineering and Failure Injection Testing
High-performance Data Architecture
- Data Partitioning for Scalability
- Real-Time Data Processing Architectures
- Stream Processing Systems (Apache Kafka, Apache Flink)
Event-Driven and Reactive Architectures
- Event Sourcing and CQRS (Command Query Responsibility Segregation)
- Reactive Manifesto and Reactive Programming
- Tools and Frameworks for Reactive Systems (Akka, Reactor)
Advanced Security Architecture
- Zero Trust Architecture
- Advanced Encryption and Key Management
- Security Audits and Compliance (GDPR, HIPAA)
Architectural Trade-offs and Decision Making
- Evaluating Trade-offs (Cost, Performance, Reliability)
- Use Case Analysis and Prototyping
- Documentation of Architectural Decisions (ADR)
Building Enterprise-level Architectures
- Governance and Standards in Enterprise Systems
- Interfacing with Legacy Systems
- Domain-Driven Design (DDD) in Enterprise Applications
Leadership in System Design
- Leading Architectural Discussions and Reviews
- Mentoring and Developing Architectural Skills in Teams
- Creating Roadmaps for System Evolution and Scaling