Search

Lessons (23)

• DSA Interview Patterns Cheat Sheet

  … Keyword triggers, a decision flowchart, complexity tables and a step-by-step interview routine. The big idea There …

• KISS: Keep It Simple, Stupid

  … that isn't needed. Why complexity hurts mermaid flowchart LR C[More complexity] -- B[More places for bugs …

• Structural Patterns: How to Connect Objects

  … making incompatible pieces fit, adding features without editing classes, and hiding complexity behind simple fronts. --- 1. Adapter 🔌 Analogy …

• State Management (Redux, Zustand, TanStack Query)

  … Large, complex, team-heavy apps → Redux Toolkit. - Filters and pagination belong in the URL.

• Big-O Notation Made Simple

  … Learn the 7 common complexities with pictures and how to calculate them. The big idea You need to …

• Creational Patterns: How to Make Objects

  … it. Problem: creating an object is expensive or complex, and you need many similar copies. js const baseEnemy …

• Domain-Driven Design: Tactical Patterns

  … happened in the domain OrderPlaced , OrderShipped Factory Encapsulates complex creation Order.create(...) , QuoteFactory Entities vs value objects mermaid …

• Choosing an Architecture

  … Many teams, very different scaling needs Distributed-systems complexity Event-driven Components react to published facts Many reactions …

• Vertical Slice Architecture & the Modular Monolith

  … one folder per use case, top to bottom; each slice picks its own level of complexity. - Slices pair …

• Why Kubernetes?

  … Pods, Deployments, Services, Ingress, ConfigMaps/Secrets, volumes, autoscalers. - It's powerful but complex. Use it when the scale …

• Monolith vs Microservices

  … Simplicity ✅ One codebase, easy to debug ❌ Distributed system complexity Calls between parts ✅ Fast, in-memory function calls ❌ Slow …

• REST vs GraphQL vs gRPC

  … URL), expensive queries need depth/complexity limits, and the server is more complex. gRPC: fast, typed calls between …

• Kafka vs RabbitMQ & the Kafka Ecosystem

  … analytics, CDC?} Q2 -- yes K Q2 -- no Q3{"Complex routing, priorities,<br/ per-message TTL / delays,<br/ classic …

• What Is Software Architecture?

  … great scale, but complex queries and more vendor lock-in text docs/adr/ ├── 0001-record-architecture-decisions.md …

• CQRS & Event Sourcing

  … Query] -- RM When to use them ✅ Good fit: complex domains with rich business rules, strong audit requirements (finance …

• Event-Driven Architecture

  … Deposited / Withdrawn events Full history and replay; more complex 4. CQRS Events keep separate read models up to …

• Domain-Driven Design: Strategic Design

  … differentiation -- High business differentiation y-axis Low complexity -- High complexity quadrant-1 Core - build with care quadrant-2 …

• Which Pattern Do I Need?

  … without<br/ editing a class"] -- DE[Decorator] P6["Complex subsystem,<br/ want a simple entry point"] -- FA[Facade …

• Service Communication: Sync vs Async

  … every step ✅ Services only know events Best for Complex flows with many steps and compensations Simple flows, many …

• Layered (N-Tier) Architecture

  … fit --- --- Small to medium apps, CRUD-heavy Rich, complex business domains Teams new to architecture: easy to understand …

• SQL vs NoSQL Databases

  … a strict schema catches bad data, JOINs answer complex questions, ACID transactions keep money and inventory correct, and …

• Message Queues & RabbitMQ

  … RabbitMQ Smart broker, queues and routing Task queues, complex routing, request/reply Apache Kafka Distributed append-only log …

• React Hooks in Practice

  … setSettings] = useState(() = JSON.parse(localStorage.getItem("settings") ?? "{}")); For complex state with many transitions, useReducer keeps the logic in …