Building a Tweet Scheduler using Upstash

This comprehensive guide details the process of building a Tweet Scheduler using Upstash QStash, Upstash Redis, Next.js, and Vercel. It outlines the necessary prerequisites, including Node.js, Upstash, Twitter, and Vercel accounts, and describes the tech stack utilized, featuring Upstash for serverless database management, Next.js for web framework, TailwindCSS for design, and Vercel for deployment. The guide walks through setting up Upstash Redis and QStash for scheduling, integrating Twitter OAuth 2.0 for user authentication, and creating a user interface with shadcn/ui components for scheduling tweets. It provides instructions for automating tweet scheduling, deploying the app to Vercel, and ensuring seamless operation through a scheduled job that posts to the /api/schedule endpoint daily.