Mempool
A mempool is the set of unconfirmed transactions broadcast to a blockchain network that are waiting to be included in a block.
Category
On-Chain Execution
These terms describe how transactions are propagated, ordered, and sometimes exploited in public transaction pipelines.
MEV
MEV (maximal extractable value) is value that can be gained by controlling the ordering, inclusion, or exclusion of transactions in a block.
Sandwich Attack
A sandwich attack is a pattern where an attacker places transactions before and after a target swap to influence execution and capture value at the target's expense.
Private Orderflow
Private orderflow is transaction intent routed through private relays or auction systems so it is not visible to the public mempool before execution.