Day 5: I Built Like–Unlike System in Backend (Next.js API)

Day 5 – Like & Unlike System Completed 🚀

GitHub Link : https://github.com/VibeShared/vibeshared.git

Welcome to Day 5 of building a social media platform from scratch.
In this video, I implemented the Like & Unlike system on the backend using Next.js API routes, focusing on clean logic, performance, and scalability.

This series documents real backend development in public, showing how social media features are actually built at production level.

✅ What’s completed on Day 5:

Like post API

Unlike post API

Prevent duplicate likes

Like count handling

User–post relationship logic

Clean and scalable backend implementation

🔧 Tech Focus:

Backend APIs in Next.js (App Router)

Like / Unlike system design

Database consistency & validation

Production-ready API structure

📌 About the Challenge:

Series: Building a Social Media Platform

Style: Build in Public

Backend: Next.js

Goal: Build a real, usable social media product

Start Date: 1 January 2026

This series is for:

Full-stack developers

Backend engineers

Startup builders

Anyone curious how social media systems work internally

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👉 Like the video to support the challenge
👉 Comment what backend feature you want next

Видео Day 5: I Built Like–Unlike System in Backend (Next.js API) канала vibeshared