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What Is a “Mempool” in Cryptocurrency and Why Is Its Size Important to Transaction Fees?

The mempool is the queue of unconfirmed transactions; a large queue means high competition and thus higher transaction fees.
Greeks.Live18.11.25

What Is a “Mempool” in Cryptocurrency and Why Is Its Size Important to Transaction Fees?

The mempool is a waiting area for unconfirmed cryptocurrency transactions on the network. Nodes hold these transactions before miners select them for inclusion in a block.

Its size reflects network congestion: a large mempool means high demand for block space. High demand drives up transaction fees as users compete to have their transactions processed faster by offering higher bids.

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