How Do Layer 2 Solutions on Ethereum Impact the Prevalence of DeFi Front-Running?
Layer 2 (L2) solutions, such as rollups, can significantly reduce the prevalence of front-running by changing the transaction ordering mechanism. L2s often use a centralized sequencer to batch and order transactions, which can implement fair ordering rules or private mempools.
This centralization, while a potential single point of failure, can prevent the public mempool race conditions seen on Layer 1.