Todo system design

20 system design questions MOST asked in every interviews, both at the fresher and experienced levels.

𝐅𝐫𝐞𝐬𝐡𝐞𝐫 𝐋𝐞𝐯𝐞𝐥 𝐒𝐲𝐬𝐭𝐞𝐦 𝐃𝐞𝐬𝐢𝐠𝐧

1. Design a simple URL shortening service.
2. Design a basic chat application.
3. Design a file storage system.
4. Design a simple social media platform.
5. Design a simple search engine.
6. Design a simple e-commerce website.
7. Design a basic ride-sharing system.
8. Design a basic video streaming service.
9. Design a simple recommendation system.
10. Design a basic food delivery app.
11. Design a parking lot management system.
12. Design a simple music streaming service.
13. Design a basic online ticket booking system.
14. Design a simple note-taking application.
15. Design a weather forecasting system.
16. Design a basic email service.
17. Design a file synchronization system.
18. Design a simple calendar application.
19. Design a basic online quiz platform.
20. Design a user authentication system.

𝐄𝐱𝐩𝐞𝐫𝐢𝐞𝐧𝐜𝐞𝐝 𝐋𝐞𝐯𝐞𝐥 𝐒𝐲𝐬𝐭𝐞𝐦 𝐃𝐞𝐬𝐢𝐠𝐧

1. Design a URL shortening service like bit.ly.
2. Design a distributed key-value store like Redis.
3. Design a scalable social network like Facebook.
4. Design a scalable recommendation system like Netflix.
5. Design a distributed file system like Hadoop's HDFS.
6. Design a real-time messaging system like WhatsApp.
7. Design a web crawler like Google.
8. Design a distributed cache like Memcached.
9. Design a content delivery network (CDN) like Cloudflare.
10. Design a scalable search engine like Google.
11. Design a ride-sharing system like Uber.
12. Design a video streaming service like YouTube.
13. Design an online food delivery system like Zomato.
14. Design a collaborative document editing system like Google Docs.
15. Design an e-commerce platform like Amazon.
16. Design a recommendation system for an online marketplace.
17. Design a fault-tolerant distributed database system.
18. Design a scalable event-driven system like Twitter.
19. Design a scalable photo-sharing platform like Instagram.
20. Design a distributed task scheduling system.
21. Design a simple thermometer app 
22. Design a simple pregnancy date app 
23. Design a simple dob Hindu and English calendar app 
24. Design a simple full moon, no moon prediction app
25. Design a simple app to calculate Hindu year 
26. Design a MCP client to help query about Hindu civilization and family tree of Ram Ji, Krishna Ji
27. Design a simple app for mortgage calculator 

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