CodeBet Project: Viva Questions and Answers
Project Overview: CodeBet
Brief Explanation
CodeBet is an innovative platform designed to merge coding contests, portfolio management, and
cryptocurrency-based betting
into a single ecosystem. It allows developers to participate in coding competitions, track their
performance through dynamic
portfolios, and place secure cryptocurrency bets on their contest outcomes. The platform leverages
blockchain technology to
ensure transparency and security, while gamification elements such as leaderboards and
achievements enhance user engagement.
Key features include real-time contest discovery from platforms like LeetCode and Codeforces, a
blockchain-powered betting
system using Ethereum smart contracts, and integration of user-generated portfolios that track
performance across various
coding platforms. Future enhancements aim to incorporate machine learning for performance
predictions, expand supported
cryptocurrencies, and optimize the betting system with advanced cryptographic techniques like
zero-knowledge proofs.
---
Viva Questions and Answers
General Questions
1. Q: What is CodeBet, and what problem does it solve?
A: CodeBet is a platform that integrates coding contests with cryptocurrency betting and portfolio
management. It addresses
the lack of recognition for consistent performance in coding contests and provides developers with
tangible rewards,
community interaction, and a transparent betting system.
2. Q: What are the main features of CodeBet?
A:
- Contest discovery and filtering.
- Blockchain-based cryptocurrency betting system.
- Dynamic portfolio management with visual statistics.
- Leaderboards and achievements to motivate users.
3. Q: Why did you choose blockchain technology for this project?
A: Blockchain provides transparency, security, and decentralization, making it ideal for managing
bets and ensuring fair
payouts. The immutable nature of smart contracts on Ethereum guarantees trustworthiness.
Technical Questions
4. Q: Which technologies were used in the backend and why?
A:
- Node.js: For its scalability and asynchronous capabilities, which are critical for handling multiple
user requests.
- Express.js: Simplifies routing and API creation.
- MongoDB: A flexible NoSQL database for storing user profiles, contest data, and betting history.
- Redis: For caching frequently accessed data to improve performance.
5. Q: How does the blockchain-based betting system work?
A: Smart contracts written in Solidity manage the betting process. Users place bets using
cryptocurrencies, and the contract
automatically calculates and disburses payouts based on contest results. Web3.js facilitates the
interaction between the
blockchain and the platform.
6. Q: What is the role of Web3.js in your project?
A: Web3.js acts as a bridge between the frontend and the Ethereum blockchain, enabling users to
interact with smart contracts
for placing bets and checking transaction statuses.
7. Q: How does the platform ensure scalability and reliability?
A: CodeBet uses a microservices-based architecture hosted on AWS, with MongoDB for scalable
data storage and Redis for
efficient caching. The system is designed to handle thousands of concurrent users through load
balancing and cloud-based
infrastructure.
Practical Implementation Questions
8. Q: How do you fetch and integrate contest data?
A: Third-party APIs from platforms like LeetCode and Codeforces are used to dynamically fetch
contest data. These APIs are
integrated into the backend to populate contests in real-time.
9. Q: What challenges did you face during development, and how did you overcome them?
A:
- Challenge: Asynchronous blockchain transactions caused delays in user feedback.
Solution: Web3.js was used to display transaction statuses in real-time.
- Challenge: Managing high traffic during popular contests.
Solution: AWS scaling and Redis caching were implemented to handle spikes.
10. Q: How do you plan to enhance the platform in the future?
A: By supporting more cryptocurrencies, integrating additional coding platforms, optimizing smart
contracts, and implementing
machine learning models for performance predictions.
User Experience Questions
11. Q: How do users interact with the platform?
A: Users register on the platform, link their coding accounts, discover contests, build portfolios,
and place bets. A React.js
frontend ensures a seamless and responsive user interface.
12. Q: How does CodeBet motivate users to improve their skills?
A: Through gamification features like leaderboards, achievements, and competitive betting, which
encourage consistent
participation and skill enhancement.
---
These questions cover the technical, practical, and conceptual aspects of the project and provide a
comprehensive understanding
for viva preparation.