Is this type of Dapp reasonable to be built on Ethereum?

Question

I'm currently doing some tests with Solidity programming language and EVM. I want to create application where people could make a personal accounts and make some business logic then. But I'm afraid of creating account gas price. Now I have very simple Account contract:

contract Account {
    string name;
    string secName;
    uint balance;

    function Account(string name, string secName) {
        name = name;
        secName = secName;
        balance = 1;
    }
}

Also I have function to create new account in other Manager contract

function createAccount(string name, string secName) isCreator {
        Account account = new Account(name, secName);
        accounts.push(account);
    }

Calling this function cost 127909 gas and now It's around 0.14$ (5 gwei for gas). Seems to be a little bit expensive for creating account with only two text fields.

So the questions is: probably ethereum blockchain is not good solution for Dapp like that or It's possible to decrease amount of gas for creating new account transaction?

score 2 · Accepted Answer · answered Jul 24 '17 at 20:43

Creating a separate contract for each account is probably overkill. Each new account will cost gas for the (identical!) code of the new contract, plus the smaller cost of a transaction. Ethereum may be meant for this, but not done in this way.

You may be able to use structs for the same purpose. For example:

struct Account {
        string name;
        string secName;
        uint balance;
}

Account[] accounts;

function createAccount(string name, string secName) isCreator {
    accounts.push(Account(name, secName, 1));
}

This will likely provide whatever you need, much easier and simpler. You can also look into libraries.

See here for my answer elsewhere on this kind of subject.

Is this type of Dapp reasonable to be built on Ethereum?

1 Answers1