# api
2 articles
nextjs
How to Build a Like Button with Next.js and Upstash Redis
Step-by-step implementation of a like button using Next.js App Router and Upstash Redis, plus the cost lessons learned from running it on Vercel's usage-based billing.
Mar 10, 2026 · 8 minnextjs
Build a Popular Posts Ranking with GA4 API in Next.js
Learn how to call the Google Analytics 4 Data API from Next.js App Router to build a page-view-based popular posts ranking with ISR caching, step by step.
Mar 5, 2026 · updated Mar 8, 2026 · 9 min