Fusaka Upgrade
Enhancements to Ethereum's Scalability and Data Availability
The Fusaka upgrade introduces foundational improvements to Ethereum, focusing on data availability, Layer 2 scaling, and preparing the network for full Danksharding. Key components include technologies such as PeerDAS, which allow nodes to specialize in storing different pieces of data while still verifying overall availability, significantly increasing Layer 2 network capacity while maintaining security.
What is the Fusaka Upgrade?
Fusaka enhances Ethereum’s ability to handle high-throughput Layer 2 applications, reduces transaction costs, and strengthens the network’s readiness for future scaling solutions. The name “Fusaka” is a combination of Fulu and Osaka: Fulu is a star representing the consensus layer upgrade, while Osaka is the city representing the execution layer upgrade.
Related EIPs for this upgrade
How do Ethereum network upgrades work?
Ethereum network upgrades require explicit opt-in from node operators on the network. While client developers come to consensus on what EIPs are included in an upgrade, they are not the ultimate deciders of its adoption.
For the upgrade to go live, validators and non-staking nodes must manually update their software to support the protocol changes being introduced.
If they use an Ethereum client that is not updated to the latest version, at the fork block, it will disconnect from upgraded peers, leading to a fork on the network. In this scenario, each subset of the network nodes will only stay connected with those who share their (un)upgraded status.
While most Ethereum upgrades are non-contentious and cases leading to forks have been rare, the option for node operators to coordinate on whether to support an upgrade or not is a key feature of Ethereum's governance.