AWS Database Blog

Most enterprise customers have high uptime requirements for their mission-critical applications. Their businesses can’t afford application downtime and have requirements for minimal or near-zero downtime patching ability for their application and databases. The infrastructure used by the backend Oracle databases for those business-critical applications must be able to support these high uptime needs. When migrating […]

In this post, we deep dive into AWS Database Migration Service (AWS DMS) Time Travel, a feature that was introduced with DMS version 3.4.6 to make troubleshooting simple and secure. With Time Travel, you can now troubleshoot data discrepancies between source and target by retrieving and logging the SQL statements. We’ll discuss the steps to […]

Many companies need to maintain an audit trail to track updates to their data. For compliance and other reasons, they’re required to preserve a history of all updates and deletes made to any given record in any given database table. For example, a foreign exchange transaction between two global banks includes a set of payment […]

PostgreSQL is a powerful open-source object-relational database system with over 30 years of active development that has earned it a strong reputation for reliability, feature robustness, and performance. AWS offers Amazon Relational Database Service (Amazon RDS) and Amazon Aurora as fully managed relational database services. Amazon RDS for PostgreSQL and Amazon Aurora PostgreSQL-compatible edition makes […]

In this post, we show you a case study of an e-commerce site that had relational database management system (RDBMS) performance problems and how Amazon DynamoDB contributed to their solution. ZOZO has large-scale sale events requiring engineers to monitor and respond in real time to ensure that the service runs without problems. DynamoDB helped ZOZO […]

This is a guest post written by Janet M. Six, Senior Product Manager at Tom Sawyer Software. Fraud and corruption affect the lives of millions of people by impacting the financial health of corporations and individuals. Fraud is typically carried out by multiple parties that, by their very nature, strive to remain hidden in plain […]

To take advantage of the performance, security, and scale of Amazon DynamoDB, customers want to migrate their data from their existing NoSQL databases in a way that is cost-optimized and performant. In this post, we show you how to migrate data from Azure Cosmos DB to Amazon DynamoDB through an offline migration approach using AWS […]

December 2022: This post was updated with support for blue/green deployments for Amazon RDS and Amazon Aurora. November 2022: This post was updated with changes introduced with the launch of Amazon Aurora MySQL-Compatible Edition versions 2 and 3, and in-place upgrade from version 2 to 3. Amazon Aurora MySQL-Compatible Edition version 1 (with MySQL 5.6 […]

Amazon Aurora is a relational database management system (RDBMS) built for the cloud with full MySQL and PostgreSQL compatibility. Aurora is designed to take advantage of the cloud in areas of scalability, availability, and durability, as well as combine the speed and reliability of high-end commercial databases with the simplicity and cost-effectiveness of open-source databases. […]

Monthly releases are always hectic, and companies face challenges with SQL deployments and schema versioning. It’s very time-consuming when multiple developers are developing code and need to run multiple SQL files across multiple production databases. To maintain environment integrity and consistency across applications, code and schema changes need to sync across multiple non-production and production […]