With on premise setups, compute/storage separation is often implemented using a NAS or similar storage unit that exposes an S3 API endpoint.

So, you want your realtime analytical queries to be really fast, and that’s why you selected Apache Druid! Today, let’s have a look at another aspect of how Druid achieves its amazing performance.

If you come from a traditional database background, you are probably used to creating and maintaining indexes on most of your data. In a relational database, indexes can speed up queries but at a cost of slower data insertion.