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docs: clear cache (#43471)

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Co-authored-by: achatterjee-grafana <70489351+achatterjee-grafana@users.noreply.github.com>
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Christopher Moyer 2022-02-18 06:52:00 -06:00 committed by GitHub
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docs/sources/enterprise/query-caching.md
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@ -71,6 +71,22 @@ To disable query caching for a single data source:
To disable query caching for an entire Grafana instance, set the `enabled` flag to `false` in the [Query caching section of Enterprise Configuration]({{< relref "./enterprise-configuration.md#caching" >}}). You will no longer see the Cache tab on any data sources, and no data source queries will be cached.
## Clear cache
If you experience performance issues or repeated queries become slower to execute, consider clearing your cache.
> **Note:** This action impacts all cache-enabled data sources. If you are using Memcached, the system clears all data from the Memcached instance.
**To clear the cache**:
1. Sign in to Grafana and click **Settings > Data Sources**.
1. Select a data source.
1. Click the **Cache** tab.
1. Click **Clear cache**.
## Sending a request without cache
If a data source query request contains an `X-Cache-Skip` header, then Grafana skips the caching middleware, and does not search the cache for a response. This can be particularly useful when debugging data source queries using cURL.