Tutorials Programming Tutorials, Guides & Best Practices

1. Minimize Storage Writes

• Writing data to the blockchain is one of the most expensive operations. Whenever possible, minimize storage writes or combine them into a single operation.
• Example: Instead of updating multiple state variables individually, group them into a struct and update the struct in a single operation.

Each of these use cases can be built on the same principles you learned in this tutorial but with more complex logic and integrations.

In this tutorial, we covered the basics of building a decentralized application (DApp) with smart contracts on the Ethereum blockchain. You learned how to set up a development environment, write and deploy a smart contract, and create a front-end interface to interact with it. This DApp is just the beginning—there's much more to explore in the world of decentralized applications, from scaling solutions to integrating with off-chain data sources.

Example Contract:

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

contract SimpleStorage {
    uint256 public storedData;

    function set(uint256 x) public {
        storedData = x;
    }

    function get() public view returns (uint256) {
        return storedData;
    }
}

const solanaWeb3 = require('@solana/web3.js');

// Connect to the Solana Devnet
const connection = new solanaWeb3.Connection(
  solanaWeb3.clusterApiUrl('devnet'),
  'confirmed'
);

console.log('Connected to Solana Devnet');

This code initializes a connection to the Solana Devnet, which is a test network where you can experiment without using real SOL tokens.

Use npm to install the Anchor CLI:

   npm install -g @project-serum/anchor-cli