Amazon DynamoDB is a fully managed, serverless NoSQL database from AWS that stores key-value items and documents. AWS runs the servers, storage and scaling.
Its key characteristics:
Reads and writes take single-digit milliseconds at any scale.
Its service level agreement (SLA) promises 99.99% availability, or 99.999% for global tables, and data is replicated across three Availability Zones.
The schema is flexible, since only the primary key is fixed.
In on-demand mode, capacity scales with each request. In provisioned mode, auto scaling adjusts the capacity you set.
ACID transactions make writes to several items succeed or fail together.
Global tables replicate a table to other Regions, and every replica accepts writes.
Rewriting in plainer words…
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