Amazon DynamoDB

Amazon DynamoDB is a non-relational database that delivers reliable performance at any scale. It's a fully managed, multi-region, multi-master database that provides consistent single-digit millisecond latency, and offers built-in security, backup and restore, and in-memory caching. More than 100,000 AWS customers have chosen DynamoDB for mobile, web, gaming, ad tech, IoT, and many other applications that need low-latency data access. DynamoDB delivers consistent, single-digit millisecond responsiveness at any scale. Build apps with virtually unlimited throughput and storage. Add an in-memory cache that reduces response times from milliseconds to microseconds, without any app changes. DynamoDB is a serverless database that automatically scales throughput up or down, and continuously backs up your data for protection. DynamoDB gives globally distributed applications fast access to local data by replicating tables across multiple AWS Regions. Build flexible and reusable microservices using DynamoDB as a serverless data store for consistent and fast performance. Build personalized mobile apps with smooth experiences for your users. DynamoDB takes care of operational tasks so that users can focus on applications. Analyze devices by connecting high-velocity, high-volume IoT data in DynamoDB to Amazon Redshift and Amazon QuickSight. DynamoDB uses primary keys to uniquely identify each item in a table and secondary indexes to provide more querying flexibility. DynamoDB uses the partition key's value as input to an internal hash function. The output from the hash function determines the partition (physical storage internal to DynamoDB) in which the item will be stored. DynamoDB supports strong consistency on data reads so that applications are reading the latest values from the table since the last update. DynamoDB also natively supports atomic counters, allowing users to atomically increment or decrement numerical attributes with a single API call.