Can a Transaction Be Dropped from the Mempool?
Yes, a transaction can be dropped from a node's mempool. This usually happens if it remains unconfirmed for a very long time (e.g. several weeks) or if the mempool is full and the transaction has a very low fee-per-byte, leading to its eviction to make room for a higher-fee transaction.
Glossar
Dropped Transaction
Cause ⎊ A dropped transaction occurs when a submitted instruction fails to achieve confirmation on the blockchain ledger.
Eviction
Liquidation ⎊ The term "eviction," within cryptocurrency derivatives and options trading, most directly refers to the forced closure of a leveraged position by a clearinghouse or exchange due to margin deficiencies.
Transaction
Execution ⎊ A Transaction is the atomic unit of action recorded on a distributed ledger, representing the initiation and confirmation of a value transfer, a smart contract interaction, or the settlement of a derivative trade.
Miner
Function ⎊ A Miner is a network participant in a Proof-of-Work (PoW) blockchain responsible for aggregating pending transactions into a new block and expending computational power to solve the cryptographic puzzle.
Mempool
Propagation ⎊ The mempool, within cryptocurrency networks, functions as a temporary holding area for unconfirmed transactions awaiting inclusion in a block.