Object Oriented Design: Beginner to Advanced (No Coding)+LLD

Explore how object oriented design mirrors relationships by mastering classification, five relationship types: association, aggregation, composition, inheritance, dependency, and designing object interactions through message passing in a university system.

Explore classification in object oriented design through three approaches: classical categorization, conceptual clustering, prototype theory. Map nouns to objects and verbs to methods in real world scenarios like university registration.

Explore the five core object-oriented relationship types—association, aggregation, composition, inheritance, and dependency—through a university system, detailing bidirectional and unidirectional links, cardinalities, and whole-part dynamics.

Examine generalization and inheritance to form is-a hierarchies with shared and specialized features. See how polymorphism, code reuse, and dependency, association, aggregation, and composition shape object-oriented design.

Explore how objects communicate through messages to coordinate actions, from a college registration scenario to a smartphone interface, highlighting message passing, encapsulation, and dynamic object collaboration.

Explore client-server relationships in a university system, where students, courses, and transcripts exchange messages, and compare synchronous versus asynchronous messaging for scalable, multithreaded designs.

Explore how asynchronous message passing enables concurrency and scalability, and master object visibility types (global, parameter, attribute, and local) to design robust, scalable systems.

Explore design principles that drive loose coupling and high cohesion, creating flexible, reusable frameworks with clear object responsibilities. Apply the law of Demeter to keep interactions with neighbors, preserving modularity.

Master object oriented design concepts, including synchronous and asynchronous message passing, visibility, and loose coupling, using mnemonics and real-world examples like Netflix and Instagram.

Explore object oriented analysis from business needs to architecture using the Netflix University case study, focusing on stakeholders, interactions, and design decisions before writing a single line of code.

Domain storytelling teaches analyzing software through user stories to reveal objects and business rules, mapping a student journey from search to enrollment, payment, progress tracking, and certification.

Follow Doctor Johnson as he uses an instructor portal to create courses, manage videos, and organize modules and quizzes, while illustrating object oriented design through workflows and governance.

Explore microservices thinking and object oriented design to build scalable platforms. Learn categorization, bounded contexts, and services like enrollment, payment, and content moderation that ensure integrity.

Explore bounded contexts in a scalable video platform, covering streaming, downloads, notifications, and analytics, and study the responsibility matrix and the course object's attributes that drive behavior.

Explore the course object model and the cqrs pattern that separates query and command methods, showing how to get course details, enrollment, progress updates, and ratings drive business value.

Map user stories to object collaboration and represent the system with UML diagrams, enabling a clear handoff from analysis to design and guiding maintainable, scalable architectures.

Explore object oriented design for scalable systems, applying solid principles, patterns, and rest api architecture with cloud native deployment. Learn to design databases, apis, and deployment for production ready architecture.

Explore the solid design principles: single responsibility, open-closed, Liskov substitution, interface segregation, and dependency inversion, using Netflix University examples. Emphasize one class, one job, and extendable, testable design.

Explore design patterns as proven templates for solving design problems. Learn singleton, factory, observer, and strategy patterns, and apply them to enable loose coupling, centralized configuration, and flexible object creation.

Identify the right database pattern using PostgreSQL, MongoDB, Redis, and Cassandra to balance ACID, flexibility, and scalability, then design normalized schemas, strategic denormalization, and targeted indexing for Netflix University.

Explore restful api design for a Netflix University system, mapping objects to resources, using http verbs, stateless requests, and universal status codes. Implement authentication with jwt, rbac, and api versioning.

Learn cloud native architecture with docker containerization for consistent, isolated deployments and use Kubernetes to orchestrate replicas, load balancing, service discovery, caching, and content delivery network for Netflix University.

Turn your object oriented design into a working, testable system through the implementation phase. Learn DevOps, containerization with Docker and Kubernetes, and robust testing to deploy Netflix University in production.

Map domain objects like student and enrollment to a hexagonal architecture. Enforce business rules in domain objects and orchestrate workflows with a service layer and repositories.

Master the object oriented testing strategy, from unit tests validating domain rules to integration and end-to-end tests with mocking for isolated validation across the testing pyramid.

Discover how containerization and Docker images ensure consistent deployments from staging to production, with Kubernetes orchestration, 12-factor app configuration via environment variables, and health monitoring for Netflix University.

Navigate production operations to ensure reliability, observability, incident handling, scaling, security, and disaster recovery. Discover the three pillars of observability—logging, metrics, tracing—and learn rollback and disaster recovery techniques.

Explore advanced topics in object oriented design, focusing on concurrency, persistence, frameworks, and application generators to build scalable, available systems beyond basics.

Understand how concurrency turns overlapping enrollment requests into a survival feature for scalable systems, balancing threads, time slicing, and asynchronous non-blocking models with thread pools and message passing.

Understand object lifespans from transitory to persistent, and how impedance mismatch with relational databases shapes persistence decisions. Learn how ORMs bridge objects to SQL, using PostgreSQL for scalable solutions.

Learn how frameworks shift control from you to the framework, replace thousands of lines of networking code, and enable MVC and dependency injection to focus on business logic.

leveraging application generators to replace repetitive admin forms, validations, and crud logic with generated boilerplate from a high-level model, enabling faster, consistent ui, api, and database outputs.

Integrate concurrency, persistence, and generators into a shared architecture backbone, showing how multiple services and teams cooperate. Balance abstractions and low-level control to solve real human problems.