Apache Druid | Apache® DruidSub-second queries at any scaleExecute OLAP queries in milliseconds on high-cardinality and high-dimensional data sets with billions to trillions of rows without pre-defining or caching queries in advance. High concurrency at the lowest cost Build real-time analytics applications that supports 100s to 100,000s queries per second at consistent performance with a highly efficient architecture that u
Spanner: Google’s Globally-Distributed Database
データベース アーキテクチャーの動向と使い分け
