Author: Jason Hunter

In this post we demonstrate how to enforce client-side timestamp-based write sequence order on HAQM DynamoDB. The goal is to ensure items with lower timestamps don’t overwrite items with higher timestamps, even if the requests are received out of order by the database.

HAQM DynamoDB enables you to back up your table data continuously by using point-in-time recovery (PITR). When you enable PITR, DynamoDB backs up your table data automatically with per-second granularity. PITR helps protect you against accidental writes and deletes. For example, if a test script accidentally writes to a production DynamoDB table, or someone mistakenly […]

HAQM DynamoDB continuously sends metrics about its behavior to HAQM CloudWatch. Something I’ve heard customers ask for is how to get a count of successful requests of each operation type (for example, how many GetItem or DeleteItem calls were made) in order to better understand usage and costs. In this post, I show you how to retrieve this metric.

HAQM DynamoDB is a fully managed, serverless, key-value NoSQL database designed to run high-performance applications at any scale. DynamoDB recently launched a new feature: Incremental export to HAQM Simple Storage Service (HAQM S3). You can use incremental exports to update your downstream systems regularly using only the changed data. You no longer need to do a […]

HAQM DynamoDB is a key-value and document database that delivers single-digit millisecond performance at any scale. It’s a fully managed, multi-Region, multi-active, durable database with built-in security, backup and restore, and in-memory caching for internet-scale applications. In 2020, DynamoDB introduced a feature to export DynamoDB table data to HAQM Simple Storage Service (HAQM S3) with […]

If you’re using HAQM DynamoDB tables with provisioned capacity, one challenge you might face is how best to handle a sudden request traffic increase (spike) without being throttled. The more sudden and extended the traffic spike, the more likely a table will experience throttles. However, throttles aren’t inevitable even for spiky traffic. Here we walk you through eight designs to handle traffic spikes, and present their advantages and disadvantages.

HAQM DynamoDB is a fully managed, serverless NoSQL database service that provides fast and predictable performance with seamless scalability. Every table in DynamoDB has a schema which specifies if it has a simple partition key (for pure key-value lookups), or a partition key and sort key both (for more complex query patterns). You use these […]

January 2025: The calculations in this post have been updated following DynamoDB’s 50% reduction in on-demand throughput pricing. Refer to New – HAQM DynamoDB lowers pricing for on-demand throughput and global tables to learn more. Your HAQM DynamoDB table might store millions, billions, or even trillions of items. If you ever need to perform a […]

HAQM DynamoDB sends metrics about its operations to HAQM CloudWatch. At the time of this writing, the list includes 33 metrics including: throughput consumed and provisioned, account and table limits, request latencies, system errors, and user errors. Two metrics not included are the DynamoDB table size and item count. These values can be observed in […]

When developing applications, you often need to implement a counter to accurately track actions such as votes cast, the available quantity of a resource in an eCommerce store, or tickets available for an event. These counters must be updated as the resource quantity changes. In this post, we explore seven approaches to implementing resource counters […]