Definition ∞ Rollup Transaction Ordering refers to the sequence in which transactions are processed and batched together within a rollup, a Layer 2 scaling solution. This ordering determines the execution sequence of operations. It directly impacts the integrity and fairness of transactions.
Context ∞ This aspect is critical for mitigating issues like front-running and other forms of MEV (Miner Extractable Value) within rollup environments. News concerning Layer 2 developments often discusses how different rollup designs address transaction ordering to ensure a fair and efficient user experience.
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