Muriel Medard (@murielmedard) 's Twitter Profile
Muriel Medard

@murielmedard

Muriel Médard is co-founder of Optimum optimizing decentralized memory in Web 3. She is the NEC Professor of Software Science and Engineering at MIT.

ID: 1736813890812481536

calendar_today18-12-2023 18:22:06

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Aryan (@aryonchain) 's Twitter Profile Photo

1/ Optimum's new paper makes a strong case: the trilemma isn’t a hard limit. By using RLNC at the propagation layer, they reduce consensus latency without reducing validator count or fault tolerance. That changes what’s possible. Here's how: 🧵

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2/ Gossip protocols break down at scale. More nodes = more duplication = more time for messages to saturate the network. This forces larger consensus windows, which caps throughput. So most blockchains pick: small validator set (scale) or large set (security/decentralization).

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3/ RLNC sidesteps this by encoding messages into linear combinations. Each transmission carries new information, not redundant data. Message propagation becomes linear and loss-tolerant. Faster consensus, even in large networks.

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4/ So what? This is the first time we can scale node count without degrading performance. It means decentralization no longer comes at the cost of latency or throughput. And that removes the central constraint of the trilemma.

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5/ That opens up new system designs: • High-throughput L1s with thousands of validators • Sub-second block times without giving up fault tolerance • Light clients that actually work on mobile or constrained devices • Better UX for rollups, games, real-time apps

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6/ And when you pair this with Optimum’s DeRAM layer, stateless nodes querying a shared, coded memory space, you also eliminate local storage bottlenecks. What we get is: • Cheap, fast syncing • Stateless validation • Elastic participation

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7/ Once decentralization, security, and scalability no longer constrain each other, you’re in a different regime. Infra becomes composable. Design tradeoffs become architectural choices, not limits. And the network stops being the bottleneck.

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8/ You can build: • Latency-sensitive DeFi (options, perps, auctions) • Fully onchain games with low tick latency • Real-time coordination primitives • Trustless infra in hostile or low-connectivity environments • Applications that aren’t even viable today

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9/ This is why we backed Optimum early. They didn’t punt scalability to rollups or hardware. They started at the network layer, and made real, measurable progress toward removing the core constraint holding blockchains back.

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10/ The trilemma shaped protocol design for a decade. What happens when it no longer applies? We’re about to find out.

Muriel Medard (@murielmedard) 's Twitter Profile Photo

In this video I pull together the queueing theory we have been exploring together to explain 1. Why Glamsterdam (EIP-7782) sees a scalability benefit of about 2x 2. Why with even moderate congestion Optimum provides over 10x improvement over EIP-7782