# Miscellaneous

## Does SingleStore support compression?

Yes, column store tables are compressed by default.

## Does SingleStore perform random IO?

No, only sequential IO is used by SingleStore.

## What are the index types SingleStore supports?

The in-memory row store supports skip lists, hash tables and geospatial indexes. The on-disk column store supports ordered columnstore, hash tables, and full-text search indexes. Refer to [Understanding Keys and Indexes in SingleStore](https://docs.singlestore.com/db/v9.1/create-a-database/understanding-keys-and-indexes-in-singlestore.md) for more information.

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Modified at: January 10, 2023

Source: [/db/v9.1/introduction/faqs/miscellaneous/](https://docs.singlestore.com/db/v9.1/introduction/faqs/miscellaneous/)

(An index of the documentation is available at /llms.txt)