In recent years, an increasing number of enterprises began to use data to power decision-making, which yields new demands for data exploration and analytics. As database technologies evolve with each passing day, a variety of online analytical processing (OLAP) engines keep popping up. These OLAP engines have distinctive advantages and are designed to suit varied needs with different tradeoffs, such as data volume, performance, or flexibility.

This article compares two popular open-source engines, Apache Druid, and StarRocks, in several aspects that may interest you the most, including data storage, pre-aggregation, computing network, ease of use, and ease of O&M. It also provides star schema benchmark (SSB) test results to help you understand which scenario favors which more.

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