Mastering Blockchain Programming with Solidity

Front-running attacks

The Ethereum blockchain is slow, and it is a public blockchain. Because it is a public blockchain, all the transaction data is open and can be seen by others. Even when a transaction is in the pending state, its data can be seen by others.

A transaction can be processed slowly or quickly, depending on the quantity of the gas fees each transaction is going to give to the miner to execute and add to the blockchain. A transaction paying higher gas fees are picked up by the miners first and added to the blockchain. On the other hand, if a transaction is paying lower gas fees, they are picked up later when miners are free and not many higher gas fees transactions are in the pending state. In other words, your transaction ...