Ethereum’s PeerDAS Breakthrough Paves the Way for an Eightfold Increase in Scalability
Ethereum’s development team has targeted December 3, 2025, for the Fusaka network upgrade to go live, after a trio of public testnet launches set for October ETH News: Fusaka Coming in December - CoinDesk [ 2 ]. This upgrade, a key milestone in Ethereum’s plan to boost scalability and strengthen security, will introduce PeerDAS (Peer Data Availability Sampling), a system designed to ease node storage demands by sharing blob data across the network Fulu-Osaka (Fusaka) | ethereum.org [ 1 ]. With PeerDAS, each node only manages one-eighth of the total blob data, which could potentially allow the network to scale up to eight times its current throughput while upholding cryptographic security Fulu-Osaka (Fusaka) | ethereum.org [ 1 ]. This advancement is set to notably enhance layer-2 (L2) solutions by cutting down data posting expenses and boosting transaction capacity.
Fusaka will also implement two Blob Parameter Only (BPO) forks, gradually increasing blob capacity thresholds from 6/9 up to 14/21 by December 2025. These upgrades, which won’t necessitate new client installations, are intended to respond to the rising needs of L2 applications while ensuring network reliability ETH News: Fusaka Coming in December - CoinDesk [ 2 ]. When Fusaka is released, Ethereum’s gas limit will jump from 45 million to 60 million, with further hikes planned for 2026. This increase is designed to support greater transaction loads while adhering to block propagation and validation requirements Ethereum Fusaka Upgrade: What the November 2025 Hard [ 3 ].
On the technical side, Fusaka brings changes to gas pricing, such as EIP-7918, which links blob fees with execution costs to avoid market imbalances Fulu-Osaka (Fusaka) | ethereum.org [ 1 ]. The upgrade also strengthens node resilience through features like transaction gas limit caps (EIP-7825) and updated computation cost models for certain operations, including modular exponentiation (EIP-7883). These improvements are aimed at reducing denial-of-service risks and maintaining stable network performance as scaling continues Fulu-Osaka (Fusaka) | ethereum.org [ 1 ].
The rollout of this upgrade is preceded by extensive testing, including three planned public testnets in October 2025 to ensure seamless compatibility among execution and consensus clients ETH News: Fusaka Coming in December - CoinDesk [ 2 ]. Developers stress that these assessments are crucial for a smooth mainnet shift, especially for node operators who need to update their software to stay in sync after the upgrade Fulu-Osaka (Fusaka) | ethereum.org [ 1 ]. The Fusaka activation is timed to come before the Devconnect conference in Buenos Aires, fitting Ethereum’s faster upgrade cycle of every six months Ethereum Fusaka Upgrade: What the November 2025 Hard [ 3 ].
Experts observe that Fusaka is a pivotal upgrade for Ethereum’s infrastructure, concentrating on backend improvements rather than new end-user features Ethereum Fusaka Upgrade: What the November 2025 Hard [ 3 ]. By optimizing data availability, adjusting gas costs, and improving node operation, this update sets the stage for future enhancements, such as possible reductions in block timing and deeper L2 integration. The staged blob scaling with BPO forks exemplifies Ethereum’s stepwise development approach, prioritizing system reliability and security as it tackles new scalability needs ETH News: Fusaka Coming in December - CoinDesk [ 2 ].
