Interaction of Cluster Components
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You run database queries against an aggregator.
![](https://images.contentstack.io/v3/assets/bltac01ee6daa3a1e14/blt2a972b69bfa44d20/66a3cf76521d7523b36a92bf/16083b575e3eff-Wp0J9d.png?width=850&disable=upscale&auto=webp)
Parallel Execution of Queries
By default, SingleStore will create one partition per CPU core on the leaves for maximum parallelism.default-partitions-per-leaf
variable, or as an optional parameter to CREATE DATABASE.
In the context of query execution, a partition is the granular unit of query parallelism.
Last modified: June 22, 2022