Ethereum: How to develop with layer 2
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Ethereum Level 2 Solutions: A Beginner’s Guide to Developing Solidity and Other Languages
As a newbie to Ethereum, you probably want to explore the latest scaling solutions. One of the most exciting aspects are the Layer 2 (L2) technologies that provide faster and more efficient transactions, reducing the congestion problems that traditional Ethereum faces. In this article, we will look at two well-known L2 solutions: Arbitrum, Optimism and Zksync, focusing on how to develop in Solidity and other programming languages.
What are tier 2 solutions?
Level 2 solutions are aimed at increasing the scalability and usability of Ethereum without compromising security. By offloading some of the complex logic and calculations from the main blockchain, 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 Tier 2 solutions on Ethereum. It was created by a team led by Mihai Alisi, a well-known developer in the Ethereum ecosystem. Arbitrum strives to provide fast and secure transactions while reducing the congestion problems faced by traditional Ethereum.
To develop on Arbitrum using Solidity:
- Install Arbitrum SDK: Download the latest version of Arbitrum SDK from the project’s official website.
- Create a new contract: Write your own Solidity contract that can be deployed on the Arbitrum main chain.
- Use the `
EthAbi'' library: Use the EthAbi library to work with Ethereum's ABI (Application Binary Interface).
- Interacting with the Arbitrum API: Use the Arbitrum API to call functions and interact with your contract.
Example:
solidity
pragma solidity ^0.8.0;
import "
contract MyContract {
function myFunction() public pure returns (bool) {
// Call the Arbitrum API to perform the transaction
uint256[] memory inputs = new uint256[](1);
uint256[] memory outputs = new uint256[](2);
(inputs[0], outputs[0]) = abi.encodePacked(1, 2); // function call example
// Use the API to interact with your contract
bool result = abi.decodeBool(address(this).call.value(inputs[0] * 10).result(), true);
return result;
}
}
Optimism: A Scalable L2 SolutionOptimism is another popular tier 2 solution that provides fast and secure transactions. Its main goal is to reduce latency and improve user experience.
To develop on Optimism using Solidity:
Install Optimism SDK: Download the latest version of Optimism SDK from the project's official website.
Create a new contract: Write your own Solidity contract that can be deployed on the Optimism mainchain.
Use theOptimismAbi'' library: Use the Optimism Abi library to work with the Ethereum ABI.`solidity
Interaction with the Optimism API: Use the Optimism API to call functions and interact with your contract.Example:
pragma solidity ^0.8.0;
import "
contract MyContract {
function myFunction() public pure returns (bool) {
// Call the Optimism API to perform the transaction
uint256[] memory inputs = new uint256[](1);
uint256[] memory outputs = new uint256[](2);
(inputs[0], outputs[0]) = abi.encodePacked(1, 2); // function call example
// Use the API to interact with your contract
bool result = abi.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 new consensus mechanism to ensure fast and secure transactions.
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