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Vikas Joshi
@vicky2604-
Decentralized Raffle Smart Contract A decentralized lottery system where users can enter by paying a fee, and a random winner is selected automatically after a specific interval. The randomness and automation are powered by Chainlink services. 💡 Key Takeaways: Fairness with Chainlink VRF: I learned how to use Chainlink VRF to generate secure, verifiable randomness. This ensures the winner is chosen fairly and transparently. Automation with Chainlink Keepers: I implemented Keepers to monitor conditions like time intervals, player count, and contract balance, automating key parts of the process without manual intervention. Error Handling and State Management: I explored managing smart contract states using enums, ensuring smooth transitions between "OPEN" and "CALCULATING" phases while preventing invalid actions like entering the raffle during calculations. Gas Optimization: Optimizing parameters like gasLane and callBackGasLimit was crucial for making the contract efficient and cost-effective.
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