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Disk-optimized vector engine now available on the Amazon OpenSearch Service

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Amazon OpenSearch’s vector engine can now run modern search applications at a third of the cost on OpenSearch 2.17 domains. When you configure a k-NN (vector) index for disk mode, it becomes optimized for operating in a low memory environment. With disk mode on, the index is compressed using techniques like binary quantization and search quality (recall) is retained through a disk-optimized rescoring mechanism using full-precision vectors. Disk-mode is an excellent option for vector search workloads that require high accuracy, cost efficiency and are satisfied by low hundreds-of-milliseconds latency. It provides customers with a lower cost alternative to the existing in-memory mode when single-digit latency  is unnecessary. To learn more, refer to the documentation .

CloudWatch RUM now supports percentile aggregations and simplified troubleshooting with web vitals metrics

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CloudWatch RUM, which captures real-time data on web application performance and user interactions, helping you quickly detect and resolve issues impacting the user experience, now supports percentile aggregation of web vital metrics and simplified events based troubleshooting directly from the web vitals anomaly.

Google uses the 75th percentile (p75) of a web page’s Core Web Vitals—Largest Contentful Paint, First Input Delay, and Cumulative Layout Shift—to influence page ranking. With CloudWatch RUM, you can now monitor these p75 values of web page vitals and ensure that majority of your visitors experience optimal performance, minimizing the impact of outliers. You can also click on any point in the Web Vitals graph to view correlated page events, allowing you to quickly dive into event details such as browser, device, and geolocation to identify specific conditions causing performance issues. Additionally, you can track affected users and sessions for in-depth analysis and quickly troubleshoot issues without the added steps of applying filters to retrieve correlated events in CloudWatch RUM.

These enhancements are available in all regions where CloudWatch RUM is available at no additional cost to users.

See documentation to learn more about the feature, or see user guide or AWS One Observability Workshop to get started with real user monitoring using CloudWatch RUM.

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