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  • How to handle Smart Contract Debugging: Interview prep

    Olivia Smith

    Member

    Updated: Mar 29, 2025
    Views: 2.1K

    Ummm… I am new to smart contract development but has many years of experience as full stack development under my belt. Several times, I was doing React, Node.js and other backend stuff where it is a normal thing with real time bug, debugging and a few error messages.

    Now i am diving into smart contract dev, it is a terrified experience. how do you debug smart contracts without any real time logs, without any facility of redo. As suggested by many, I am using Hardhat, Tenderly, Foundry, I am getting a feeling that i am guessing the things half of my time

    If interviewer ask me questions about debugging smart smart contract, what should be my convincing answer? Can anyone suggest me any hacks, tools to understand debugging smart contract more deeply.

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  • Benny Angela

    Member • 2mos

    Yeah, debugging smart contracts is a different pain. What’s worked for me is a mix of thorough testing before deployment and using custom events for logging since you can’t rely on console logs. Hardhat’s console.log() is great for local testing, but once a contract is deployed, you have to depend on events and transaction traces. I also break my contracts into small, modular functions so if something goes wrong, I know exactly where to look instead of sifting through a giant codebase. Simulations on Tenderly help a lot too—you can replay transactions and see exactly where they fail. And yeah, reading transaction traces was frustrating at first, but over time, you start seeing patterns, and debugging gets a lot easier.

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  • David Lee

    Member • 1mo

    Debugging smart contracts can be a frustrating experience, especially if you're coming from traditional full-stack development. Without real-time logs or easy rollback options, troubleshooting Solidity can feel like working in the dark. If you're struggling with debugging Solidity smart contracts, here are three highly recommended courses that can help:

    1. Blockchain Masterclass: Solidity & Foundry - Smart Contracts 2025 (Udemy) This course covers advanced Solidity development, smart contract security, and debugging techniques using Foundry and Hardhat. It’s perfect for learning how to test, debug, and optimize smart contracts efficiently.

    2. Advanced Solidity: Understanding and Optimizing Gas Costs (LinkedIn Learning) Optimizing gas usage is key to debugging Solidity contracts. This course teaches how to write efficient code, analyze gas costs, and improve contract performance—essential skills for troubleshooting and debugging.

    3. Security and Auditing in Ethereum (Coursera) A must for debugging Solidity smart contracts, this course covers vulnerabilities, attack vectors, and best practices for writing secure contracts. Understanding security risks helps in identifying and fixing contract issues before deployment.

    If debugging smart contracts feels overwhelming, these courses will give you the structured learning and hands-on experience needed to troubleshoot Solidity efficiently. Hope this helps! 🚀

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