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In this lesson we learn about Installation & Set up of Apache Druid with Node The phrase "deep storage" refers to the long-term storage system used by Apache Druid, where past data segments are preserved for durability and retrieval in the future. Druid SQL is a query language that allows you to interact with Apache Druid using SQL-like syntax. It provides a familiar and intuitive way to query and analyze data stored in Druid. Data management in Apache Druid involves various aspects of handling data within the Druid system, including data retention, data purging, and schema evolution. Ingestion or indexing in Apache Druid refers to the process of loading data into the Druid system for querying and analysis. The distributed architecture of Druid is created to be user-friendly and cloud-friendly. Apache Druid is used in various real-time use cases where fast and interactive analytics on streaming data are required. Apache Druid is a high performance, real-time analytics database that delivers sub-second queries on streaming and batch data at scale and under load. A real-time data streaming platform is a software infrastructure designed to ingest, process, and deliver data in real-time from various sources to multiple destinations. Arrays and Strings
In PHP, an array is a data structure that stores a collection of values, such as numbers, strings, or other data types. Each value in an array is associated with an index, which can be an integer or a string.