OpenSearch has introduced Star-Tree Index, a new feature that significantly improves aggregation performance for high-cardinality and multi-dimensional queries. This index pre-aggregates data across configured dimensions and metrics at ingestion time, enabling sub-second response times for frequent aggregations like terms, histogram, and range. Star-Tree Index…

Amazon OpenSearch Service introduces support for Derived Source, a new feature that can help reduce the amount of storage required for your OpenSearch Service domains. With derived source support, you can skip storing source fields and dynamically derive them when…