TechFlow news, December 4 — Ethereum co-founder Vitalik Buterin posted on social media this morning stating that PeerDAS technology in Fusaka is significant because it truly realizes sharding. Ethereum can now achieve consensus on blocks without requiring any single node to view more than a tiny fraction of the data, while remaining resistant to 51% attacks.
Vitalik noted that sharding has been Ethereum's dream since 2015, and data availability sampling technology has been under research since 2017—now it has finally been realized. However, he pointed out three remaining limitations in Fusaka's sharding: Ethereum L1 cannot handle O(c^2) transaction throughput, there remains a proposer/builder bottleneck issue, and there is no sharded mempool yet.
He stated that the next two years will be dedicated to refining the PeerDAS mechanism, carefully scaling up and ensuring stability, using it to scale Layer 2 networks, and once zero-knowledge Ethereum Virtual Machine matures, applying it to expand Ethereum L1's gas processing capacity.
