Introduction
Social media platforms are among the most complex web applications in the world.
They handle:
- Millions of users
- Real-time updates
- Images and videos
- Likes, comments, and shares
- Notifications
- Security and privacy
This makes them the perfect case study for MERN developers.
At CuriosityTech, social media systems are used as learning projects because they combine everything a full stack developer must know. Day 21 brings all MERN concepts together in a real business scenario.
1. Core Features of a Social Media App
| Feature | MERN Responsibility |
| User profiles | MongoDB + Node |
| News feed | React + API |
| Media uploads | Cloud storage |
| Likes & comments | Database |
| Notifications | Backend logic |
2. System Architecture
This allows fast, scalable interactions.
3. Data Flow
When a user posts:
- React captures content
- API sends it
- MongoDB stores it
- Cloud stores media
- Feed updates in real time
This is how modern platforms work.
Infographic Description
Title: MERN Social App Architecture
Conclusion
Building a social media app proves that MERN developers can handle complex, high-scale systems.
This is why CuriosityTech uses such case studies to prepare students for real-world development.
