Metamask: How often can I use `contract.methods.some_method.call()` to read data?

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MetaMask Limitations on Method Calls: Understanding Contract Execution Speed

If you are running a blockchain-based decentralized application (dApp) like Ethereum, using the MetaMask browser extension is essential. However, one of the limitations you may encounter when relying heavily on contract.methods.some_method.call() to read data from your dApp’s contracts is the need to understand how often it can be called and what the potential consequences of this could be for your application.

Reading Data Usingcontract.methods.some_method.call()`

In general, calling a contract method within a script executed by MetaMask or another external code execution environment (e.g. Remix) incurs some overhead for the following reasons:

• Gas: The gas fees associated with executing Ethereum transactions and method calls can be significant.

• Network Latency: Data transfer between MetaMask’s JavaScript environment, the blockchain network, and the dApp’s smart contracts occurs at a certain rate.

The specific gas cost depends on many factors, including:

• Contract complexity (more complex contracts require more gas)

• Network congestion

• Amount of data read

To give you some ideas, here are some rough estimates for reading different amounts of data:

| Read Data | Estimated Gas Cost |

| :——- | :—————– |

| 100 bytes | ~15-25 gwei (0.0000125 ETH) |

| 1KB | ~50-70 gwei (~0.0045 ETH) |

| 10KB | ~150-250 gwei (~0.0149 ETH) |

Blacklisting or Blocking of Applications

While MetaMask is a powerful tool, excessive method calls can impact dApp performance and lead to blacklisting or blocking by application developers.

Here are some reasons why this can happen:

• Excessive Method Call Frequency: Excessive method calls can overload the network, resulting in increased latency.

• Gas Charge Exceeding Available Funds: Excessive gas consumption can deplete your MetaMask or other Ethereum accounts, making it difficult to continue using your application.

To mitigate these risks, consider the following best practices:

1. Use «async/await» and «try/catch» blocks.

When communicating with dApps contracts, use asynchronous programming techniques to avoid blocking the current thread while waiting for method calls or executing contract code.

const result = await Contract.methods.someMethod.call();

2. Optimize method calls

To reduce gas costs and network latency:

• Minimize complex contracts: Less complex contracts require less gas, resulting in lower average fees.

• Use a more efficient data format (e.g. «Buffer» instead of plain JavaScript arrays).

ETHEREUM INPUT P2PKH