- What is the mempool?
The mempool is the node’s holding area for all the pending transactions. It is the node’s collection of all the unconfirmed transactions it has already seen enabling it to decide whether or not to relay a new transaction.
- What happens if the miners can’t keep up with the rate of the new transaction?
There will be longer transaction times as the mempool grows larger
- How does a growing mempool effect transaction fees?
Fees will grow larger due to increased competition to get the fees into the next block. Miners are incentivized to process the transactions with the largest fees.