Gas optimization for smart contracts, 1. Reject openzeppelin

Jul 22, 2023#Ethereum #Web3 #Blockchain #NFT #DeFi #DAO #DApp #区块链 #區塊鏈 #加密货币 #DeGame #链游 #Crypto #比特币 #以太坊 #合约开发101

AI Translation

This post is translated from Chinese into English through AI.View Original

AI-generated summary

The text compares two different approaches to writing a smart contract for access control and ownership transfer. The first approach involves writing custom logic without using the OpenZeppelin library. The second approach uses the OpenZeppelin library, specifically the Ownable contract. The text mentions that using OpenZeppelin results in a difference of 168,235 gas, which translates to additional costs of around 30 dollars on the mainnet. A link to a gas fee calculator website is also provided.

If you can avoid using OpenZeppelin, don't use OpenZeppelin.
For example, write an access control and ownership transfer logic.

Write your own logic

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;

contract test {
    address owner;
    uint256 x;
    constructor() {
        owner = msg.sender;
    }
    modifier onlyOwer() {
        require(msg.sender == owner);
        _;
    }
    function setOwner(address owner_)public onlyOwer{
        owner=owner_;
    }
    function add ()public onlyOwer {
        x=x+1;
    }
}

Use OpenZeppelin

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/access/Ownable.sol";
contract test is Ownable {
    uint256 x;
    constructor() {}
    function add ()public onlyOwner  {
        x=x+1;
    }
}

You can see a difference of 168,235 gas. If it were on the mainnet, it would cost about more than 30 dollars. You can check the gas fee calculation website at https://www.cryptoneur.xyz/zh/gas-fees-calculator.