![]() ![]() The second pricing axis, provisioned throughput, is a little more. Read two 4 KB, but the projected attribute names+values sum to <4KB. This rate varies across regions but is between 0.25 and 0.30 per GB-month in most regions. AWS Free Tier includes 25 reads/writes-per-second of Provisioned Throughput (across any of tables), but does not include any On Demand mode usage. Provisioned Throughput includes optional Auto-Scaling if throughput thresholds are being exceeded ( Docs).ĪWS Free Tier includes 25 reads/writes-per-second of Provisioned Throughput (across any # of tables), but does not include any On Demand mode usage. Any reads/writes above the provisioned threshold will fail, so it is not well suited to bursty or unpredictable workloads. Provisioned Throughput is cheaper if you have a meaningful number of reads/writes distributed evenly across time. "Use on-demand until it hurts" - Alex DeBrie, quoting Jared Short Indexes allow an alternate set of partition_key + sort_key to be used for queries None, Local Secondary Index, Global Secondary Index It offers single-digit-millisecond latency, scales to effectively unlimited requests-per-second & storage, and has (largely) predictable pricing. Scans return the entire contents of a table Queries allow a much faster & cheaper read of a subsection of the table Summary DynamoDB is Amazon's primary managed NoSQL database service. Transactional operations allow ACID guarantees at twice the standard costĮventually Consistent, Strongly Consistent, Transactionalĭynamo reads are by default Eventually Consistent - when you read from a table, the response might not reflect the results of a recently completed write. Pricing Dimensions # DimensionĬhoose between paying per read/write or per allocated requests-per-second-throughput ![]() It offers single-digit-millisecond latency, scales to effectively unlimited requests-per-second & storage, and has (largely) predictable pricing.ĭynamoDB, like most NoSQL datastores, differs substantially from relational databases - it can only be queried via primary key attributes on the base table & indexes. DynamoDB is Amazon's primary managed NoSQL database service. ![]()
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