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Fixing "Cache Tags" in /docs/drupal-cache/ #3036

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Oct 26, 2017
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Fixing "Cache Tags" in /docs/drupal-cache/ #3036

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2c16072
Fixing "Cache Tags" heading on https://pantheon.io/docs/drupal-cache/
stevector Oct 26, 2017
22e22f7
Fixing links
stevector Oct 26, 2017
60f1c52
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rachelwhitton Oct 26, 2017
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4 changes: 3 additions & 1 deletion source/_docs/drupal-cache.md
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Expand Up @@ -30,7 +30,9 @@ Note that Drupal 8 has no setting to configure the minimum cache lifetime.
On the Live environment, make sure to enable "Aggregate and compress CSS files" and "Aggregate and compress JavaScript files". This is critical for page render times by reducing the number of HTTP requests and reducing the amount of data transferred.

### Cache Tags
At this time, Varnish purging based on [cache tags](https://www.drupal.org/developing/api/8/cache/tags) is not supported. For configuration instructions, see [Drupal 8 Performance and Varnish Caching Settings](/docs/drupal-8-cache).
Drupal 8 introduced a [cache metadata](https://www.drupal.org/docs/8/api/cache-api/cache-api){.external} system that allows internal and external caches to be cleared in very granular fashion as data is changed. For instance, if `node 123` where resaved, caches that depends upon that node, like the full page cache of the page `mysite.com/node/123`, should be cleared.

This functionality can be added via the [Pantheon Advanced Page Cache](https://www.drupal.org/project/pantheon_advanced_page_cache){.external} module, which uses Drupal 8's cache metadata to communicate with the [Pantheon Global CDN](/docs/global-cdn/). The Drupal 7 version of the module depends upon the [Drupal 8 Cache Backport module](https://www.drupal.org/project/d8cache){.external}.

## Drupal 7 Performance Configuration

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