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Use Case
Type: Web Application Stack
Typical Use Case: Data-heavy web apps
Famous Usage: Reddit

🌀 PERN Stack

Full-Stack JavaScript with PostgreSQL

R

React

Frontend Library
  • Component-based UI
  • Virtual DOM rendering
  • Interactive user interfaces
↓
E

Express.js

Web Framework
  • Lightweight web framework
  • Handles API routes
  • Middleware management
↓
N

Node.js

JavaScript Runtime
  • Server-side JavaScript
  • Event-driven architecture
  • Non-blocking I/O
↓
P

PostgreSQL

Relational Database
  • ACID transactions
  • Advanced SQL & indexing
  • JSONB for semi-structured data
Request Flow: Client Browser → React (UI) → Express API Routes → Node.js (Server Logic) → PostgreSQL (Relational Data) → Node.js → Express → React → Client Browser