The developers of the interoperability platform LayerZero have introduced the Quick Merkle Database (QMDB), a high-performance verifiable database designed for blockchain optimization.
It was developed to address the limitations of traditional databases, which often lack efficient verification mechanisms essential for data integrity in decentralized and trustless blockchain environments.
QMDB distinguishes itself from traditional databases by being optimized explicitly for solid-state drives and capable of scaling across consumer-grade and enterprise-grade hardware.
In a whitepaper, LayerZero developers claimed that QMDB achieves a performance advantage over other database products, offering up to six times the throughput of the commonly used verifiable database, RocksDB, and surpassing others like NOMT.
The developers detailed that QMDB could handle 2.28 million state updates per second and manage 1 million transactions per second for transfers.
It supports datasets of up to 15 billion entries, roughly ten times the size of Ethereum’s state in 2024. The developers explained that by conducting Merkle tree operations in memory, QMDB can reduce disk read and write operations, which improves processing speed.
Moreover, QMDB incorporates Merkle trees into its architecture, meaning each state update automatically enhances the Merkle tree, which is crucial for verifying data integrity within blockchain applications.
“QMDB’s promising results enable the ability to provide substantially higher throughput while increasing decentralization in many systems by lowering capital costs and reducing infrastructure barriers,” LayerZero developers said.
The database is available under the MIT and Apache-2 licenses and has been released as open source. LayerZero is a blockchain protocol that aims to make applications unified across different blockchains, a concept they refer to as “omnichain.” LayerZero Labs has raised $263.3 milion across its funding rounds, with the latest 2023 round valuing it at $3 billion.
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