The term "minibuilder" is crucial. A full builder looks at the entire mempool (thousands of transactions) to construct a massive block of ~30 million gas. A builds a small block—often targeting a specific subset of transactions:
Enter the . It is a lightweight, high-velocity block builder designed specifically for low-latency environments, often deployed within the stack of "Based Rollups" (like Based Taiko) or high-performance L2s. Unlike monolithic builders that take seconds to construct a full block, a Flash Minibuilder operates between a proposer and the sequencer to build blocks in milliseconds . flash minibuilder