Apache Druid is a data warehouse and analytics platform that captures streaming data from message queues like Apache Kafka and batch data from static files, making it suitable for OLAP tasks. Datadog now integrates with Druid, allowing users to monitor the performance of their queries, data ingestion, and infrastructure health. This integration provides insights into Druid's ingestion activity, query latency, cache hit rates, memory usage, storage utilization, and logs, enabling users to troubleshoot issues, optimize performance, and gain visibility into their infrastructure costs. With Datadog's comprehensive monitoring capabilities, users can maximize the value of their Druid clusters and integrate them with other related technologies for a unified view of their data ecosystem.