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Reliability Engineering, Fault Tolerance & Disaster Recovery
Master reliability engineering fundamentals including SLI, SLO, SLA, error budgets, fault tolerance patterns, disaster recovery strategies, chaos engineering, and complete system design reliability frameworks.
Requirements Gathering & System Design Fundamentals
Master the foundation of system design: requirements gathering, functional vs non-functional requirements, capacity estimation, system analysis, quality attributes, and a proven framework for system design interviews.
Docker & Kubernetes — Containerization and Orchestration at Scale
Learn Docker containers, images, Docker Compose, Kubernetes architecture, Deployments, Services, HPA, health checks, StatefulSets, and modern CI/CD deployment patterns.
Design Patterns Every Engineer Should Know
Master essential software design patterns including Singleton, Factory, Builder, Strategy, Observer, Decorator, Adapter, Proxy, Command, and Template Method with practical examples and interview insights.
SOLID Principles — Writing Maintainable Object-Oriented Software
Master the SOLID principles with practical examples. Learn Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion to build scalable, maintainable, and testable software systems.
Low-Level Design (LLD), OOAD & Design Patterns
Learn Low-Level Design (LLD), Object-Oriented Analysis and Design (OOAD), UML diagrams, class design, object relationships, design patterns, and interview-ready approaches for common LLD problems.
Authentication, Authorization, JWT, OAuth2 & Security
Master authentication, authorization, JWTs, OAuth 2.0, OpenID Connect, RBAC, MFA, password security, session management, and scalable auth system design for system design interviews and production applications.
Scaling Systems: Performance, Bottlenecks & Capacity Planning
Learn how systems scale from 1K to 10M users, identify bottlenecks, optimize databases, use connection pooling, read replicas, async I/O, and perform capacity planning for large-scale applications.
CDNs, Load Balancers & Proxies
Learn how CDNs reduce latency, how load balancers distribute traffic, the difference between forward and reverse proxies, and how modern systems handle traffic at scale.
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