Ethereum News Today: Ethereum's Fusaka: Scaling 100K TPS Without Sacracing Decentralization

Ethereum developers are accelerating preparations for the Fusaka upgrade, the second major network overhaul of 2025, as the blockchain's execution capacity expands ahead of the implementation. The upgrade, set for activation on Dec. 3 introduces PeerDAS (peer data availability sampling), a mechanism that allows validators to verify rollup data without downloading entire blocks, significantly reducing bandwidth and storage demands. This innovation, detailed in Ethereum Improvement Proposal (EIP) 7594, enables higher data throughput for layer-2 solutions, addressing current bottlenecks in transaction processing and fee efficiency. The move aligns with Ethereum's broader roadmap to scale beyond 100,000 transactions per second (TPS) by optimizing layer-1 infrastructure alongside layer-2 innovations.

The upgrade's scaling ambitions are already materializing in Ethereum's mainnet. In November 2025, the network's block gas limit surged to 60 million, the highest level in four years, driven by over 513,000 validators signaling support for the increase. This expansion allows more transactions, swaps, and smart contract interactions per block, easing congestion during peak usage. The gas limit hike, part of the "Pump the Gas" initiative launched in March 2024 by developers Eric Connor and Mariano Conti, aims to lower transaction fees and improve user experience. The effort gained momentum in late 2024 as validators coordinated to push the gas limit higher, setting the stage for Fusaka's implementation https://cointelegraph.com/news/ethereum-validators-push-gas-limit-60m-scaling.

Fusaka's technical architecture includes BPO (Blob Parameter Only) forks, which enable incremental adjustments to blob capacity without disruptive hard forks. This flexibility allows Ethereum to scale gradually as layer-2 demand grows, avoiding the risks of large, infrequent upgrades. Additionally, EIP-7825 caps individual transaction gas usage, while EIP-7934 introduces a 10 MB block size limit to mitigate denial-of-service attacks. These safeguards ensure that even as data throughput increases, individual nodes remain capable of verifying blocks, preserving decentralization.

The upgrade also addresses user experience and security. EIP-7917 introduces deterministic proposer lookahead, making the proposer schedule for future epochs fully predictable and accessible onchain. This transparency reduces uncertainty for validators and enhances network efficiency. Meanwhile, history expiry mechanisms, part of Ethereum's "Verge" and "Purge" roadmap phases, will eventually prune old data, streamlining node operations https://cointelegraph.com/explained/how-the-fusaka-upgrade-fits-into-ethereum-s-long-term-roadmap.

Ethereum's scaling trajectory reflects a multi-year strategy. The Merge (2022) transitioned the network to proof-of-stake, Shapella (2023) enabled staked ETH withdrawals, and Dencun (2024) introduced cheaper data storage via blobs. Pectra (May 2025) further refined staking parameters, while Fusaka now consolidates these efforts by enhancing data availability and modular scalability https://cointelegraph.com/explained/how-the-fusaka-upgrade-fits-into-ethereum-s-long-term-roadmap. Analysts note that the upgrade positions Ethereum to compete with high-throughput blockchains while maintaining security and decentralization.

Market reactions to the upgrade remain mixed. While Ethereum's price has shown resilience-holding above $3,000 and showing improved RSI readings-technical indicators like Death Cross patterns highlight lingering bearish pressures https://www.fxstreet.com/cryptocurrencies/news/crypto-today-bitcoin-ethereum-xrp-flash-subtle-recovery-signs-202511271200. The network's ability to sustain post-upgrade demand will depend on layer-2 adoption, institutional participation, and macroeconomic conditions. However, with Fusaka's implementation imminent, Ethereum's infrastructure is primed to support the next phase of decentralized applications and financial services.