AWS Database Blog

Amazon ElastiCache now supports Bloom filters: a fast, memory-efficient, probabilistic data structure that lets you quickly insert items and check whether items exist. In this post, we discuss two real-world use cases demonstrating how Bloom filters work in ElastiCache, the best-practices to implement, and how you can save at least 90% in memory and cost compared to alternative implementations. Bloom filters are available in ElastiCache version 8.1 for Valkey in all AWS Regions and at no additional cost.

AWS Schema Conversion Tool (AWS SCT) makes self-managed data warehouse migrations predictable by assessing and converting the source database schema and code objects to a format compatible with Amazon Redshift. In this post, we describe how to perform a database assessment and conversion from Teradata to Amazon Redshift. To accomplish this, we use the AWS SCT and its CLI, because it provides support for Teradata as a source database, complementing the wide range of assessments handled by AWS Database Migration Service (AWS DMS) Schema Conversion (DMS SC).

In this post, we explore the benefits and features of Multi-AZ for RDS Custom for Oracle and how it helps improve the resilience of your database.

In this post, we discuss different ways you can use volatility classification with functions in PostgreSQL and provide best practices to help you keep your database optimized and develop efficient and reliable database applications.

In this post, we demonstrate how to configure a standby replica for your RDS for Db2 instance. We also discuss best practices for setting up, monitoring, and managing standby replicas.

In this post, we show you how Amazon Aurora DSQL powers modern gaming use cases from real-time multiplayer interactions to globally consistent leaderboards by delivering seamless scalability, strong consistency and built-in multi-region availability.

In this post, we show you how to evolve your DynamoDB table’s data model to meet changing application requirements while maintaining zero downtime in production systems. We explore two main techniques with examples that you can apply to your own applications: Adding new attributes and Creating new entities.

In this post, we discuss handling large collections that are approaching 32 TiB for Amazon DocumentDB. We demonstrate solutions for transitioning from uncompressed to compressed collections using AWS DMS. This migration not only accommodates larger uncompressed data volumes, but also significantly reduces storage, compute costs associated with Amazon DocumentDB and improves performance.

Last week, AWS announced Amazon Keyspaces change data capture (CDC) streams, a new feature that captures real-time data changes in your Amazon Keyspaces tables. In this post, we discuss the architecture of Amazon Keyspaces CDC streams, explore its use cases and benefits, and provide an example demonstrating how to set up CDC streams, stream data, and capture the streamed records.

Aqua Security is a leading provider of cloud-based security solutions, trusted by global enterprises to secure their applications from development to production. In this post, we explore how Aqua Security automates the use of Amazon Aurora fast clones to support read-heavy operations at scale, simplify their data workflows, and maintain operational efficiency.