What Is a Cryptocurrency Mempool?

A mempool (short for "memory pool") is the part of a cryptocurrency's full node software that stores unconfirmed transactions broadcast to the network. These transactions are stored in the mempool until they are included in a block by a miner or validator and confirmed on the blockchain. When a user initiates a transaction, it is broadcast to the network and picked up by full nodes. These nodes will then validate the transaction to ensure that it is valid (e.g., that…