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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. 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 ## 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. 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.