Can I roll multiple transactions into one?

Question

I wonder whether it is possible to roll multiple transactions into one transaction and post it on the chain, similar behavior to L2 chains.

I will have a smart contract where there might be a high traffic on it, and the transactions will be submitted from my own wallet. So I was wondering, maybe I can do something like collect all the signed transactions in a database, and then roll them into one transaction (using merkle trees etc.).

The transaction can be call to any of the non-view functions on the smart contract.

Can this be achieved? If yes how?

Answer 1

https://furucombo.app/ and https://defisaver.com/ Both have transaction builders to use the Ethereum money legos and craft combined transactions from a web dapp!

Answer 2

For instance, they use optimism rollups or Zksnarks; where multiple transactions are rolled up and publish in block in the form of snapshots.

However, if you want to roll up multiple transactions into single transaction all you have to do it is write another function that calls multiple functions.

Say for example,

//SPDX-License-Identifier: MIT

pragma solidity ^0.8.15;

contract A {

    uint public s_sum;
    uint public s_mul;

    function sum(uint a, uint b) public{
        s_sum =  a + b;
    }

    function mul(uint a, uint b) public {
        s_mul =  a * b;
    }

    function jointExec(uint a, uint b) public {
        sum(a,b);
        mul(a,b);
    }
}

If you call individually, sum takes around 28,000 gas and mul takes 28,000 gas.

However, if you use joinExec function, the transaction costs around 38,000. So you are saving 20,000 gas.

Just not that, you can also create another smart contract which is already deployed to use jointExecution just I showed.

Tell me if that is what you are looking for.