Ethereum: how to develop using level 2

Ethereum Layer 2 Solutions: Beginner’s Guide on How to Develop in Solidity and Other Languages

If you’re a new Ethereum developer, you’ll probably want to explore the latest scaling solutions. One of the most interesting aspects is Layer 2 (L2) technologies that enable faster and more efficient transactions, reducing the congestion issues faced by traditional Ethereum. In this article, we’ll dive into two main L2 solutions: Arbitrum, Optimism, and Zksync, focusing on how to develop for Solidity and other programming languages.

What are Layer 2 Solutions?

Layer 2 solutions aim to increase Ethereum’s scalability and usability without compromising security. By offloading some of the complex logic and calculations from the blockchain’s main chain, these solutions can improve transaction processing times, reduce congestion, and improve the overall user experience.

Arbitrum: Scalable L2 Solution

Arbitrum is one of the most popular Ethereum Layer 2 solutions. It was built by a team led by Mihai Alisie, a well-known developer in the Ethereum ecosystem. Arbitrum aims to provide fast and secure transactions while reducing the congestion issues faced by traditional Ethereum.

To develop Arbitrum using Solidity:

  • Install Arbitrum SDK: Download the latest version of the Arbitrum SDK from the project’s official website.
  • Create a new contract

    Ethereum: How to develop with layer 2

    : Write your Solidity contract that can be deployed on the Arbitrum main chain.

  • Use the EthAbi library: Use the EthAbi library to work with the Ethereum ABI (application binary interface).
  • Interact with the Arbitrum API: Use the Arbitrum API to call functions and interact with the contract.

Example:

” rigidity

pragma rigidity ^0.8.0;

import “

contract MyContract {

public pure function myFunction() returns (bool) {

// Call the Arbitrum API to execute the transaction

uint256[] memoryInputs = new uint256[](1);

uint256[] memoryOutputs = new uint256[](2);

(inputs[0], outputs[0]) = both.encodePacked(1, 2); // example function call

// Use the API to interact with the contract

bool result = both.decodeBool(address(this).call.value(inputs[0] * 10).result(), true);

return result;

}

}


Optimism: A Scalable L2 Solution
Optimism is another popular Layer 2 solution that provides fast and secure transactions. Its main goal is to reduce latency and improve user experience.
To develop Optimism using Solidity:

  • Install the Optimism SDK: Download the latest version of the Optimism SDK from the project's official website.

  • Create a New Contract



    : Write your own Solidity contract that can be used on the Optimism main chain.

  • Use the OptimismAbi Library: Use the Optimism Abi library to work with the Ethereum ABI.

  • Interact with the Optimism API: Use the Optimism API to call functions and interact with the contract.
Example:
" rigidity
pragma rigidity ^0.8.0;
import "
contract MyContract {
public pure function myFunction() returns (bool) {
// Call the Optimism API to execute the transaction
uint256[] memoryInputs = new uint256[](1);
uint256[] memoryOutputs = new uint256[](2);
(inputs[0], outputs[0]) = both.encodePacked(1, 2); // example function call
// Use the API to interact with the contract
bool result = both.decodeBool(address(this).call.value(inputs[0] * 10).result(), true);
return result;
}
}

Zksync: A Scalable L2 Solution

Zksync is a layer 2 solution that uses a novel consensus mechanism to ensure fast and secure transactions.