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this post was submitted on 16 May 2024
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Are you sure there is such a thing? My understanding was that they just submit their sandwich transactions to the mempool with higher and lower gas respectively to achieve their desired priority ranking. Could be wrong though.
I'm sure, yes. If you submit to a public mempool, you have no guarantees that your two transactions will land on either side of the target transaction in the same block (They likely won't). You need to leverage conditional transactions with MEV so you guarantee the miner will select and position your transactions where you need them. In this case, before and after the target transaction.
Check out the Ethereum Foundation's page on MEV for more info.
Wow, thanks for the link. It seems things have gotten a lot more complicated with PoS. I didn't even know about PBS. I haven't been following along properly.