How GraphQL Works - The New Standard for Flexible API Design
Explaining GraphQL query language, schema definitions, and how resolvers work. Understand the differences from REST API and when to use each.
Microservices Architecture - Fundamentals of Distributed System Design
A detailed explanation of microservices design principles, service decomposition approaches, communication patterns, and challenges with solutions.
How Load Balancing Works - Stabilizing Services Through Traffic Distribution
A detailed explanation of load balancer roles, major algorithms, L4/L7 differences, and health check mechanisms.
How TCP/IP Works - Understanding the Foundation of Internet Communication
A visual explanation of the TCP/IP protocol stack's 4-layer model, 3-way handshake, and how data is segmented and reassembled.
How REST API Works - Understanding Web API Design Principles
A detailed explanation of RESTful API's six design principles, HTTP method usage, status codes, and authentication methods.
How Message Queues Work - Asynchronous Processing and System Integration
A detailed explanation of message queue concepts, Pub/Sub patterns, and use cases using RabbitMQ, Kafka, and more.
How Caching Works - The Key to Web Performance Optimization
A detailed explanation of browser cache, CDN, server-side cache mechanisms, and how to use Cache-Control headers.
How CDN Works - Technology for Faster Content Delivery
A detailed explanation of CDN basic concepts, edge locations, caching strategies, and features of major providers.
Database Replication - Achieving Availability and Scalability
Detailed explanation of master-slave configuration, synchronous/asynchronous replication, and failover mechanisms.
How HTTPS Works - Why Communication is Secure
A visual explanation of SSL/TLS encryption process. Understanding the use of public key and symmetric key cryptography.
API Versioning Strategies - Design for Backward Compatibility
Versioning methods using URL paths, headers, and query parameters, along with best practices for maintaining compatibility.
How JWT Works - Understanding Token-Based Authentication
A detailed explanation of JSON Web Token structure, how signatures work, and the difference between access tokens and refresh tokens.
How Rate Limiting Works - Access Control to Protect APIs
A detailed explanation of algorithms like token bucket and sliding window, along with rate limiting implementation patterns.
How WebSocket Works - Understanding Real-time Bidirectional Communication
A visual explanation of WebSocket handshake, frame structure, differences from HTTP, and how Socket.IO works.
How DNS Works - From Domain Name to IP Address
A step-by-step explanation of the name resolution process. Understand the role of caching and TTL.
Event-Driven Architecture - Designing Loosely Coupled Systems
A detailed explanation of event-driven design fundamentals, event sourcing, CQRS, and implementation patterns.
How CI/CD Works - Understanding Continuous Integration and Delivery
A detailed explanation of CI/CD pipeline components, GitHub Actions and GitLab CI configuration examples, and best practices.
Twelve-Factor App - Cloud-Native Design Principles
A detailed explanation of building scalable and maintainable applications using 12 design principles.
How CORS Works - Understanding Cross-Origin Requests
Detailed explanation of CORS basic concepts, preflight requests, configuration methods, and solutions to common errors.
How Docker Containers Work - Differences from Virtual Machines
Explaining the Linux namespaces and cgroups that form the foundation of container technology. Understand why containers are lightweight.
Container Orchestration - Introduction to Kubernetes
Automating container management, basic Kubernetes concepts, and how Pods, Services, and Deployments work.
Types of Authentication Methods - Comparing Sessions, Tokens, and OAuth
Compare authentication methods for web applications. Explains the features and use cases of session authentication, JWT, and OAuth 2.0.
How Git Works - Internal Structure of Version Control
Explaining the internal workings of commits, branches, and merges. Understand the structure of the object database.
SQL vs NoSQL - Guidelines for Database Selection
A detailed explanation of relational databases and NoSQL characteristics, CAP theorem, and how to choose based on use cases.
Encryption Fundamentals - Cryptographic Technologies for Protecting Data
A detailed explanation of symmetric encryption, public key encryption, and hash functions, including how to choose between them.
How Database Indexes Work
The difference between B-Tree and Hash indexes. Illustrated explanation of why searches become faster.
HTTP/2 and HTTP/3 - Evolution of Web Protocols
The evolution from HTTP/1.1 to HTTP/2 and HTTP/3. Explaining multiplexing, header compression, and how QUIC works.
Serverless Architecture - Introduction to FaaS
Serverless technologies like AWS Lambda and Cloud Functions. Explaining cold starts, pricing models, and use cases.
Web Security Fundamentals - OWASP Top 10 Countermeasures
A detailed explanation of XSS, SQL Injection, CSRF, and other major web vulnerabilities and their countermeasures.
REST API Design Principles - Building Scalable and Maintainable APIs
Learn REST API design best practices. From resource design, HTTP methods, status codes, pagination, versioning to error handling - a comprehensive guide.
Complete Guide to Authentication and Authorization Patterns - Designing Secure Access Control
Explains authentication and authorization design patterns in web applications. Covers implementation of JWT, sessions, OAuth 2.0, RBAC, ABAC, and security best practices.
Clean Architecture Introduction - Dependency Inversion and Layer Design
Explains Clean Architecture principles and implementation patterns. Covers the dependency inversion principle, layer composition, use case design, and TypeScript implementation examples in detail.
CQRS & Event Sourcing Introduction - Scalable Architecture Design
Detailed explanation from concepts to implementation of CQRS (Command Query Responsibility Segregation) and Event Sourcing. Covers read/write separation, event stores, Saga pattern, and implementation considerations.
Database Index Mechanics and Optimization - Query Acceleration Principles
From B-Tree, Hash, GIN index mechanics to composite index design, execution plan reading, and anti-patterns. Thorough explanation of index optimization using PostgreSQL examples.
Modern Design Patterns Practical Guide - GoF to 2025
From GoF design patterns to the latest architecture patterns, explained with TypeScript/Python implementation examples. Introducing modern application methods including SOLID principles, dependency injection, and repository pattern.
Domain-Driven Design (DDD) Practical Guide - Learning Tactical Design with TypeScript
Covering DDD fundamentals to practical tactical design patterns. Introducing TypeScript implementations of Entities, Value Objects, Aggregates, Repositories, and Domain Services.
GraphQL vs REST API - Design Philosophy and Selection Criteria
A thorough comparison of GraphQL and REST API design philosophies, advantages and disadvantages, and performance characteristics. Learn the criteria for choosing the optimal API design for your project.
Message Queue Design Guide - Asynchronous Processing and Event-Driven Architecture
From basic concepts of message queues to practical design patterns. Comparing RabbitMQ, Kafka, SQS, and Redis Streams with selection criteria and methods for building reliable systems.
Micro Frontend Design - Scalable UI Development with Independent Teams
Explaining micro frontend architecture principles and implementation patterns. Covering Module Federation, Single-SPA, iframe, routing strategies, state sharing, and deployment strategies in detail.
Introduction to Microservices Architecture - Design Principles and Implementation Patterns
A thorough explanation of microservices design principles, communication patterns, data management, and fault tolerance. Introducing comparisons with monoliths, service decomposition criteria, and practical best practices.
Monitoring and Observability - Visualizing System Health
The three pillars of observability: metrics, logs, and traces. Explaining Prometheus, Grafana, and distributed tracing.
Monorepo Design Patterns - Scalable Development with Turborepo, pnpm, and Nx
Explaining monorepo architecture design principles and practical patterns. Covering Turborepo, pnpm workspaces, Nx for efficient code sharing, build optimization, and CI/CD strategies.
How OAuth 2.0 and OpenID Connect Work - Authentication and Authorization Design Principles
A thorough explanation of OAuth 2.0's four grant types and OpenID Connect (OIDC). Also covering PKCE, token management, and security best practices.
How OAuth 2.0 Works - Understanding Authentication vs Authorization
The roles of access tokens and refresh tokens. Understanding the authorization code flow with diagrams.
Serverless Architecture Design Guide - FaaS/BaaS Selection and Implementation Patterns
From basic concepts of serverless architecture to practical design patterns. Comparing AWS Lambda, Vercel, Cloudflare Workers, and introducing optimal use cases.
Frontend State Management Patterns - Design Philosophy of Redux, Zustand, Jotai, and Recoil
An explanation of frontend state management design patterns. Covering Flux, Atomic, and Proxy-based architectures, comparing Redux, Zustand, Jotai, and Recoil, and introducing appropriate selection criteria.
Test Strategy Design Patterns - From Test Pyramid to Practical Test Design
Explaining effective test strategy design patterns. Covering test pyramid, test doubles, TDD/BDD, coverage strategies, and frontend/backend testing methods.
Web Security Best Practices - OWASP Top 10 Countermeasures
A thorough guide to OWASP Top 10 vulnerabilities and their countermeasures. Covering XSS, SQL injection, CSRF, authentication/authorization implementation patterns that developers should know.
Web Security Fundamentals - OWASP Top 10 and Practical Defenses
Explaining web application security fundamentals. Covering OWASP Top 10 vulnerabilities, XSS, CSRF, SQL injection, authentication/authorization patterns, and security headers.
Introduction to WebAssembly - High-Speed Binary Format for Browsers
Explaining WebAssembly (WASM) from basics to practice. Covering JavaScript integration, compilation from Rust/C++, performance optimization, and practical use cases.
Testing Strategies - The Test Pyramid for Quality Assurance
How to choose between unit tests, integration tests, and E2E tests. Explaining TDD, mocks, and coverage.
Database Sharding - Scale Out with Horizontal Partitioning
Detailed explanation of sharding basics, shard key selection, rebalancing, challenges and solutions.
API Gateway - Designing the Entry Point for Microservices
A detailed explanation of API gateway roles, key features, BFF pattern, and comparison of Kong and Envoy.
Introduction to Service Mesh - Traffic Control with Istio/Linkerd
Service mesh concepts, sidecar pattern, traffic management, mTLS, and comparison of major tools.
Designing for Idempotency - Building Safe APIs and Operations
A detailed explanation of the concept of idempotency, implementation patterns, idempotency keys, and retry strategies.
Introduction to Design Patterns - Commonly Used Design Patterns
Explaining design patterns used in modern software development, including Singleton, Factory, Observer, and more.
Caching Strategies - Fundamentals of Performance Optimization
A detailed explanation of cache types, Cache-Aside, Write-Through, TTL design, and cache invalidation.
Distributed Transactions - Design Patterns for Maintaining Consistency
A detailed explanation of two-phase commit, Saga pattern, compensating transactions, and how to achieve eventual consistency.
SOLID Principles - Foundations of Object-Oriented Design
A detailed explanation of the five principles: Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion.
Asynchronous Programming - Callbacks, Promises, and async/await
A detailed explanation of JavaScript asynchronous processing patterns, event loop, and the difference between concurrency and parallelism.