# Flushing Caches Squirro uses caches to speed up common actions, such as queries. This section shows how to flush these caches when necessary. ## Introduction In rare circumstances, the Squirro caches may become stale. If this occurs, visit the [Squirro Support website](https://go.squirro.com/support) and submit a technical support request. ## Caches There are two different caches managed in Redis. They are stored in different databases (see [Accessing Servers](../operations/accessing-servers.md#admin-access) for background): - db7: the query cache, which stores the full query responses. Updating this cache can be disabled by using the `update_cache` option in the item query API call. - db9: the generic HTTP cache which is used to cache internal calls to the various [internal web services](../operations/services.md#admin-services). ### Flush Cache (Squirro 2.4.6 and Newer) To flush the caches, restart redis-server-cache: ```bash systemctl restart redis-server-cache ```