What if you never had to manually check for your exam schedule again? UIU EduQueue automates the entire process—subscribe once, and receive your personalized exam routine directly in your inbox every trimester.
🎯 The Problem
Every trimester, thousands of UIU students face the same frustrating ritual:
- Hunting through university portals for exam schedules
- Cross-referencing room assignments with course codes
- Manually creating their own personalized routine
- Missing updates when schedules change
I built UIU EduQueue to solve this once and for all.
✨ How It Works
- Subscribe — Enter your Student ID and email once
- Automatic Fetch — System pulls your registered courses
- PDF Generation — Beautiful, personalized exam schedule with room assignments
- Email Delivery — Routine lands in your inbox before exam week
- Secure Access — PIN-based access for viewing anytime
That's it. No more hunting. No more manual work.
🚀 Key Features
📧 Automated Email Delivery
Subscribe once and receive your exam routine automatically at the start of every exam period. No action required after initial signup.
📄 Beautiful PDF Generation
Professionally designed PDF schedules featuring:
- Your complete exam timetable
- Room assignments for each exam
- Course codes and names
- Date, time, and duration details
- Student information header
🔐 Secure Access System
- PIN-based authentication for viewing routines
- Time-limited access links
- View count restrictions for security
- No public exposure of student data
📊 Real-Time Monitoring
- Discord webhook notifications for system health
- Analytics dashboard for usage statistics
- Automatic error reporting and recovery
🛠️ The Tech Behind It
Building a system that serves thousands of students reliably required serious engineering:
Backend Architecture
- Go 1.24 — High-performance API server
- GORM — Elegant ORM for PostgreSQL
- Asynq — Redis-backed async task queue for scalability
- ChromeDP & Maroto — PDF generation pipeline
Frontend
- Remix — React-based meta-framework
- TypeScript — Type-safe development
- Tailwind CSS — Modern, responsive UI
- Framer Motion — Smooth animations
- TanStack Query — Efficient data fetching
Infrastructure
- PostgreSQL — Primary database for subscriptions and requests
- Redis — Task queue and caching layer
- AWS S3 — Secure PDF storage with presigned URLs
- Cloudflare Pages — Global frontend delivery
- Docker — Containerized deployments
🏗️ System Architecture
┌─────────────────┐ ┌─────────────────┐ ┌─────────────────┐
│ Cloudflare │────▶│ Web (Remix) │────▶│ API Server │
│ Pages │ │ Frontend │ │ (Go) │
└─────────────────┘ └─────────────────┘ └────────┬────────┘
│
┌────────────────────────────────┼────────────────────────────────┐
│ │ │
▼ ▼ ▼
┌───────────────┐ ┌─────────────────┐ ┌─────────────────┐
│ PostgreSQL │ │ Redis │ │ AWS S3 │
│ Database │ │ Task Queue │ │ PDF Storage │
└───────────────┘ └────────┬────────┘ └─────────────────┘
│
▼
┌─────────────────┐
│ Worker Service │
│ (PDF + Email) │
└────────┬────────┘
│
┌───────────────────────────────┼───────────────────────────────┐
▼ ▼ ▼
┌───────────────┐ ┌─────────────────┐ ┌─────────────────┐
│ AWS SES │ │ Azure CS │ │ Custom API │
│ (Email) │ │ (Email) │ │ (Email) │
└───────────────┘ └─────────────────┘ └─────────────────┘
The Workflow
- Student Request — User submits Student ID via web interface
- Validation — Server validates request with Cloudflare Turnstile & rate limits
- Task Queue — Request is queued in Redis via Asynq
- Worker Processing:
- Fetch exam data for the student
- Generate personalized PDF with exam schedule
- Upload PDF to S3 with presigned URL
- Send email with access link & PIN
- Access — Student uses PIN to view/download their routine
📈 Impact & Scale
After 1+ year of operation:
- Thousands of students served each trimester
- Automated delivery eliminating manual work
- High reliability with multi-provider email failover
- Zero missed exams due to schedule confusion
The system handles peak loads during exam registration periods when thousands of requests come in simultaneously—the async queue system ensures every request is processed reliably.
🔧 Engineering Challenges Solved
Multi-Provider Email Failover
Email deliverability is critical. The system supports multiple email providers (AWS SES, Azure Communication Services, custom API) with automatic failover. If one provider hits rate limits, requests seamlessly route to the next.
PDF Generation at Scale
Generating thousands of PDFs requires efficiency. The worker service uses:
- ChromeDP for complex layouts requiring browser rendering
- Maroto for simpler, faster PDF generation
- S3 presigned URLs for secure, temporary access without database lookups
Rate Limiting & Security
- Cloudflare Turnstile prevents bot abuse
- Smart rate limiting with cooldown periods
- PIN-based access with view count limits
- Time-limited links that auto-expire
🎓 Bonus: DSC Integration
UIU EduQueue also powers the UIU Data Science Club operations:
- Member Registration — Online registration with payment tracking
- Event Management — Create and manage club events
- Member Verification — Portal for checking membership status
- Automated Emails — Welcome emails and event notifications
💭 Why I Built This
As a UIU student myself, I experienced the frustration firsthand. Every trimester, the same scramble to find exam schedules, the same confusion about room assignments.
I thought: What if this just showed up in your inbox, perfectly formatted, right when you needed it?
So I built it. And now, thousands of UIU students never have to worry about finding their exam routine again.
🔗 Try It Out
Visit eduqueue.monzim.com to subscribe and receive your next exam routine automatically.
Made with ❤️ for UIU Students