👤 Candidate Information

Name: Ayush Pandey
Registration Number: 22BCE7723
LinkedIn: https://www.linkedin.com/in/linkedap/
College Email: ayush.22bce7723@vitapstudent.ac.in
Personal Emails:

• inbox.ayushpandey@gmail.com
• ayushpandey.cs@gmail.com

Institution: Vellore Institute of Technology - Amaravati

A high-performance REST API built on Cloudflare's Global Edge Network, designed for the Bajaj Full Stack Exam.

Endpoint of the API

https://bfhl-fullstack-exam-api-production.devversioncv.workers.dev/bfhl

🌟 Features

• Global Edge Deployment: Deployed across Cloudflare's worldwide network of 300+ edge locations
• Exceptional Performance: p99 latency of 0 milliseconds (worst case)
• DDoS Protection: Durable Object-based rate limiting with 2-second cooling period between requests IP based.
• High Concurrency: Capable of handling 30-40k concurrent requests (even more with globally distributed users)
• Future-Ready: Architecture prepared for JWT implementation

POST /bfhl

Processes an array of data and returns separated numbers, letters, and other information.

Request:

{
  "data": ["1", "334", "4", "A", "R", "$"]
}

Response:

json
{"is_success":true,
"api_response_time":"0 milli-second",
"user_id":"ayush_pandey_15092002",
"email":"ayush.22bce7723@vitapstudent.ac.in",
"roll_number":"22BCE7723",
"odd_numbers":["1"],
"even_numbers":["334","4"],
"alphabets":["A","R"],
"special_characters":["$"],
"sum":"339",
"concat_string":"Ra"}

Test with cURL

bash
curl -X POST https://bfhl-fullstack-exam-api-production.devversioncv.workers.dev/bfhl \
  -H "Content-Type: application/json" \
  -d '{
  "data": ["1", "334", "4", "A", "R", "$"]
  }'

🚀 Performance & Scaling

• Free Tier Limits: 100,000 requests/day (Cloudflare Workers free plan)
• Concurrent Requests: Practically handles 30,000-40,000 concurrent connections even more if the request distributed worldwide.
• Global Distribution: Enhanced performance worldwide due to edge network deployment
• Zero Cold Starts: Instant response times across all regions due to V8 isolate based runtime.

🔒 Rate Limiting & Security

• Durable Object Rate Limiter: Prevents DDoS attacks effectively
• Cooling Period: 2 seconds enforced between requests from same origin
• Automatic Scaling: No manual intervention required for traffic spikes

🛠️ Technical Stack

Runtime: Cloudflare Workers

Storage: Cloudflare Durable Objects (for rate limiting)

Network: Cloudflare Global Edge Network

Language: JavaScript

🧪 Testing

The API has been thoroughly tested using Postman:

Normal API Request Test

Edge Case Testing

Rate Limiter Verification

📈 Future Enhancements

JWT-based authentication ready for implementation

📄 License This project is created for Bajaj Full Stack Exam submission.