Amazon announces the commercialization of its Quantum Ledger Database ledger database. And differentiates it from its blockchain offering.
“ QLDB is not a blockchain or distributed ledger technology “.
The objective is indeed not to provide a base for decentralized applications involving parties who do not necessarily trust each other.
It is a question of proposing a means of keep a history of data changes in an application that you own.
This “registry database” takes the form of a chain of blocks constituting an “immutable” and cryptographically verifiable transactional log.
Each data modification is subject to an entry that cannot be overwritten or deleted.
Document oriented, QLDB (Quantum Ledger Database) implements PartiQL, a SQL compatible query language.
AWS presents it as an alternative serverless to tables and audit trails. Amazon’s cloud branch also promises better performance and more scalability compared to a blockchain *, whose architecture is more complex.
We will take care to consult the pricing of service. It is mainly based on log storage ($ 0.03 per GB per month in the US East zone) and read / write operations (per million requests).
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