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# Cache.xml Reference Documentation | ||
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## Introduction | ||
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The cache.xml file is an essential configuration file in Magento 2 that controls the caching behavior of your | ||
application. By properly configuring this file, you can optimize the caching process, improve performance, and enhance | ||
the overall user experience of your Magento 2 website. | ||
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In this reference documentation, we will explore the structure and key elements of the cache.xml file. We will provide | ||
you with concrete examples and code snippets to help you understand and leverage the power of cache.xml in your Magento | ||
2 projects. | ||
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## Understanding the Structure | ||
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The cache.xml file is located in the `app/etc/` directory of your Magento 2 installation. It follows a hierarchical | ||
structure with a root `<config>` element, which contains multiple `<type>` elements representing different cache types. | ||
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```xml | ||
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<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" | ||
xsi:noNamespaceSchemaLocation="urn:magento:framework:Cache/etc/cache.xsd"> | ||
<type name="cache_type1"/> | ||
<type name="cache_type2"/> | ||
... | ||
</config> | ||
``` | ||
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Each `<type>` element represents a cache type that can be enabled or disabled individually. Magento 2 provides several | ||
predefined cache types, such as `config`, `layout`, `block_html`, and `full_page`, among others. Additionally, you can | ||
create custom cache types to suit your specific needs. | ||
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## Configuring Cache Types | ||
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To optimize caching for your Magento 2 application, you can configure each cache type by adding child elements within | ||
the corresponding `<type>` element. These child elements define various properties and behaviors for each cache type. | ||
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### Example: Configuring the `config` Cache Type | ||
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```xml | ||
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<type name="config"> | ||
<backend_model>Magento\Framework\Cache\Backend\File</backend_model> | ||
<backend_model>Magento\Framework\App\Cache\StateInterface</backend_model> | ||
<config_model>Magento\Framework\App\Cache\Config</config_model> | ||
<cache_dir>cache_dir/config</cache_dir> | ||
<description>Configuration files cache</description> | ||
</type> | ||
``` | ||
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In the example above, we configure the `config` cache type. Let's understand the purpose of each child element: | ||
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- `<backend_model>`: Specifies the backend model responsible for storing and retrieving cached data. In this case, | ||
both `Magento\Framework\Cache\Backend\File` and `Magento\Framework\App\Cache\StateInterface` are used. | ||
- `<config_model>`: Defines the configuration model responsible for managing the cache type. In this | ||
example, `Magento\Framework\App\Cache\Config` is used. | ||
- `<cache_dir>`: Specifies the directory where the cached data will be stored. The value `cache_dir/config` sets the | ||
cache directory for the `config` cache type. | ||
- `<description>`: Provides a brief description of the cache type, which can be helpful for documentation or debugging | ||
purposes. | ||
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You can configure other cache types in a similar manner, adjusting the specific elements and values according to your | ||
requirements. | ||
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## Enabling and Disabling Cache Types | ||
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By default, all cache types are enabled in Magento 2. However, you may choose to disable specific cache types that are | ||
not necessary for your particular application. Disabling cache types can help reduce the amount of data stored in the | ||
cache and improve performance. | ||
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To enable or disable a cache type, you can modify the `<type>` element in the cache.xml file. Set the `enabled` | ||
attribute to either `true` or `false` to enable or disable the cache type, respectively. | ||
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### Example: Disabling the `block_html` Cache Type | ||
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```xml | ||
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<type name="block_html" enabled="false"/> | ||
``` | ||
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In the example above, the `block_html` cache type is disabled by setting the `enabled` attribute to `false`. This can be | ||
useful during development or debugging stages, where you frequently modify layout or block templates. | ||
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Remember to clear the cache after enabling or disabling cache types to ensure the changes take effect. | ||
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## Conclusion | ||
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The cache.xml file is a pivotal configuration file in Magento 2 that allows you to control the caching behavior of your | ||
application. By understanding its structure and utilizing the available elements, you can optimize caching, improve | ||
performance, and deliver a seamless user experience. | ||
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In this reference documentation, we explored the structure of cache.xml, learned how to configure cache types, and | ||
discovered how to enable or disable them. We provided you with concrete examples and code snippets to help you apply | ||
these concepts in your Magento 2 projects. | ||
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Now armed with this knowledge, you can harness the power of cache.xml to unleash the full potential of caching in your | ||
Magento 2 applications. Happy coding! |