Enabling cache-control HTTP headers when using Cloudera Data Explorer (Hue)

You can enable Data Explorer to use HTTP headers such as Cache-Control, Pragma, and Expires to ensure that your browser always uses the fresh version of the resource. You must set the value of the custom_cache_control property to true in Hue's Advanced Configuration Snippet.

Log in to the Cloudera web interface as an Administrator.
Go to Cloudera Management Console > Environments, select your environment and go to the Data Lake tab.
Click on the CM URL to open Cloudera Manager.
Go to Clusters > Hue > Configuration and add the following line in the Hue Service Advanced Configuration Snippet (Safety Valve) for hue_safety_valve.ini field:
```
[desktop]
custom_cache_control=true
```
Click Save Changes.
Restart the Hue service.