Seamless scalability to any scale with push button scaling or Auto scalingĬaptures a time-ordered sequence of item-level modifications in a DynamoDB table and durably stores the information for 24 hours. NoSQL type of database with Name / Value structureįlexible Schema, good for when data is not well structured or unpredictable Some of the features and benefits of Amazon DynamoDB are summarized in the following table: DynamoDB Featureĩ9.99% Availability SLA – 99.999% for Global tables Key = the name of the data Value = the data itself.ĭocuments can be written in JSON, HTML, or XML. Supports key value and document structures.Ī key-value database stores data as a collection of key-value pairs in which a key serves as a unique identifier. The aggregate size of an item cannot exceed 400KB including keys and all attributes.Ĭan store pointers to objects in S3, including items over 400KB. Tables are a collection of items and items are made up of attributes (columns).Īttributes consists of a name and a value or set of values.Īttributes in DynamoDB are like fields or columns in other database systems. The underlying hardware storing data is spread across 3 geographically distinct data centers. Multi-AZ redundancy and Cross-Region Replication option. Push button scaling means that you can scale the DB at any time without incurring downtime.ĭynamoDB can be used for storing session state data. It is a non-relational, key-value type of database.ĭynamoDB is a serverless service – there are no instances to provision or manage. High Availability Approaches for DatabasesĪmazon DynamoDB is a fully managed NoSQL database service that provides fast and predictable performance with seamless scalability.Īmazon DynamoDB stores three geographically distributed replicas of each table to enable high availability and data durability.ĭata is synchronously replicated across 3 facilities (AZs) in a region.Cross Region Replication with Global Tables.
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