Add Purge and Acquia Purge modules to the codebase of your application running the current Drupal version. You must always use the latest available release. Enable the following modules:

• purge

• purge_ui

• purge_drush

• purge_queuer_coretags

• purge_processor_cron

• purge_processor_lateruntime

• acquia_purge

To increase your TTL or max-age to 1 month:

1. Navigate to /admin/config/development/performance.

2. In the Page cache maximum age drop-down menu, select 1 month in the Caching section.

Alternatively, you can use Drush as follows:

$ drush @site.env config-set -y system.performance cache.page.max_age 2764800

Navigate to /admin/config/development/performance/purge, and click the Add purger option in the Cache invalidation section.

The system displays a pop-up window to confirm the purger that you want to add. By default, Cloud Platform is selected.

1. Click Add. After the purger is added, a green tick appears in the TAG column.

Alternatively, you can use Drush to add the purger:

$ drush p-purger-add --if-not-exists acquia_purge

The purger is created.

To confirm that your setup is complete, access /admin/config/development/performance/purge, or run drush purge-diagnostics. If all checks return OK, you’re all set.

drush @site.env p-diagnostics