Ethereum's Fusaka Update to Enhance Scalability Through Mainnet Deployment
In the ever-evolving world of blockchain technology, Ethereum is gearing up for a significant update known as Fusaka. This upgrade, set to activate on December 3rd, 2025, aims to enhance Ethereum's scalability, data handling capacity, and node efficiency.
At the heart of the Fusaka update is researcher Dankrad Feist, who is proposing EIP-9698. This proposal suggests a 100x gas limit increase, potentially enabling Ethereum to handle around 2,000 transactions per second.
The Fusaka update is not just about increasing transaction capacity, though. It also focuses on foundational improvements to Ethereum's infrastructure, making it more accessible and efficient for developers and validators alike.
One of the key improvements in the Fusaka update is the implementation of PeerDAS, introduced through EIP-7594. PeerDAS allows validator nodes to verify data by sampling small pieces instead of downloading entire blobs. This implementation supports Ethereum's scalability, particularly for Layer 2 rollups.
The Fusaka update also addresses the issue of fragmentation in Ethereum's Layer 2 solutions, strengthening the base layer for better interoperability between chains.
The update introduces a phased blob capacity expansion. The first BPO fork will increase blob capacity to 10/15 blobs, activating on December 17, 2025. A second BPO fork, scheduled for January 7, 2026, will expand blob capacity to 14/21 blobs.
The Fusaka update also includes EIP-7918, which introduces bounded base fees for blob transactions. This move helps create predictable transaction costs for data-heavy applications.
The Fusaka update is part of Ethereum's ongoing scalability efforts. Following gas limit increases from 30 million to 45 million gas, a proposed further increase to 150 million gas (EIP-7935) is on the horizon.
Before the mainnet activation, the Fusaka update will undergo a testnet rollout starting on October 1st, 2025. The update is designed to meet the growing demand for Ethereum's scalability without compromising its decentralized nature.
In summary, the Fusaka update is a significant step forward for Ethereum, aiming to enhance its scalability, node efficiency, and data availability, while also addressing critical issues such as fragmentation and predictable transaction costs. The update lays the foundation for future upgrades, supporting continued Layer 2 growth in the long term.
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