System_Design

1. Scalability and Performance

   • Concepts: Vertical vs. horizontal scaling, load balancing, caching, and performance optimization. • Practices: Using tools like CDNs, database indexing, and distributed systems.

2. Reliability and Fault Tolerance

   • Concepts: Redundancy, failover mechanisms, replication, and data consistency. • Practices: Designing for graceful degradation, implementing retries and circuit breakers.

3. Security

   • Concepts: Authentication, authorization, encryption, and secure coding practices. • Practices: Implementing OAuth, SSL/TLS, and regular security audits.

4. Database Design

   • Concepts: Normalization vs. denormalization, ACID vs. BASE properties, and NoSQL vs. SQL databases. • Practices: Choosing the right database type, designing schemas, and optimizing queries.

5. API Design

   • Concepts: REST vs. GraphQL, versioning, and designing for simplicity and flexibility. • Practices: Writing clear documentation, using API gateways, and implementing rate limiting.

6. Microservices Architecture

   • Concepts: Service decomposition, inter-service communication, and eventual consistency. • Practices: Using tools like Docker and Kubernetes, managing microservice dependencies, and monitoring.

7. Cloud Architecture

   • Concepts: IaaS, PaaS, SaaS, serverless architecture, and cloud-native applications. • Practices: Leveraging services from providers like AWS, Azure, and Google Cloud, and designing for cost efficiency.

8. DevOps and Automation

   • Concepts: Continuous integration (CI), continuous deployment (CD), and infrastructure as code (IaC). • Practices: Setting up CI/CD pipelines, using tools like Jenkins, Terraform, and Ansible, and monitoring deployments.