Metro: a rollup architecture for shared sequencers (Modular insights #4)

We welcome Evan for the fourth episode of Modular Insights to give a presentation on Metro, an idea for shared sequencers and lazy rollups.

Evan on twitter

Timestamps 🕒

0:00 Intro

2:50 the problem with decentralized rollups

5:37 separating transaction aggregation and execution

9:39 shared sequencers

11:54 Paying for gas

13:28 Inheriting fork choice rule 

14:35 Atomic transaction inclusion

16:18 Swapping shared sequencer sets

17:48 Sequencer MEV

20:13 Shared mempool

20:51 Tradeoffs of Metro

21:55 Difference from Flashbots’ SUAVE

24:01 Immediate vs deferred execution

26:30 Lazy rollups

28:35 Lay rollup comparison 

31:52 Deploying a lazy rollup

33:36 Soft finality

36:09 Concluding architecture

39:48 Q&A

54:18 End

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