OpenSearch 3.9 accelerates vector search with a native neural sparse engine and new compression options, brings alerts, anomalies, and forecasts into one unified view, and protects clusters with adaptive concurrency limits and index-level search pruning. The release also advances the OpenSearch Observability Stack with redesigned trace details, reusable PromQL dashboards, and no-code alert rules. The post Get to know OpenSearch 3.9 appeared first on OpenSearch .