18 lines
952 B
Markdown
18 lines
952 B
Markdown
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[Redis](https://redis.io/) is an in-memory caching system, much like [Memcached](memcached.md). While [Varnish](varnish.md) is generally used to improve performance for anonymous users, `redis` is used to improve the performance for logged in users.
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To enable Redis in Drupal VM:
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1. Make sure `redis` is in the list of `installed_extras` in your `config.yml`.
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2. Install the [Redis](https://www.drupal.org/project/redis) module.
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3. Enable the module before you configure it in the next step.
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4. Add the following to your `settings.php`
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```php
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// Make redis the default cache class.
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$settings['cache']['default'] = 'cache.backend.redis'
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```
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There's a lot more configuration available and the best resource is generally the [Redis module's README](http://cgit.drupalcode.org/redis/tree/README.md).
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For a list of available role variables, see the [`geerlingguy.redis` Ansible role's README](https://github.com/geerlingguy/ansible-role-redis#readme).
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