In the previous procedure of running a local network, we used the Geth client with POW mining to validate the transaction. However, you may find mining a daunting process as its difficulty will rise, causing annoying, heavy computations reducing your system capacity even if we set it as low as possible in the genesis file.

To solve this issue, you have two choices: either configure the network to use an alternative mining mechanism called POA, or fix the mining difficulty in the Geth client source code. Let's have a look at these possibilities.