---
title: "Configure Prefetch cache values"
slug: "configure-prefetch-cache-values"
abstract: "How to configure the Prefetch cache values for the Sitecore Content Delivery and Content Management server roles."
---
# Configure Prefetch cache values

| Applies to | Content Delivery, Content Management |
| --- | --- |

Sitecore populates prefetch caches on application initialization and maintains those caches over the life of the application. To configure the Prefetch cache values:

1. Create a patch file for cache size values. For example, `custom.prefetch.config`.
2. Use rule-based configuration to target different environments. The following example sets custom Web database cache values for the Content Delivery role, and Master database cache values for the Content Management role:

    ```xml
    <configuration xmlns:patch="http://www.sitecore.net/xmlconfig/"
    xmlns:set="http://www.sitecore.net/xmlconfig/set/" xmlns:role="http://www.sitecore.net/xmlconfig/role/">
        <sitecore>
        <databases>
            <database id="master" role:require="ContentManagement or Standalone">
                <dataProviders>
                    <dataProvider param1="$(id)">
                        <prefetch hint="raw:AddPrefetch">
                            <cacheSize>1000MB</cacheSize>
                        </prefetch>
                    </dataProvider>
                </dataProviders>
            </database>
            <database id="web" role:require="ContentDelivery or Standalone">
                <dataProviders>
                    <dataProvider param1="$(id)">
                        <prefetch hint="raw:AddPrefetch">
                            <cacheSize>1000MB</cacheSize>
                        </prefetch>
                    </dataProvider>
                </dataProviders>
            </database>
        </databases>
    </sitecore>
    </configuration>
    ```

3. Deploy your configuration file to the `<root>/App_Config/Includes` folder. You can check your changes by visiting `/sitecore/admin/showconfig.aspx` and searching for `patch:source="custom.prefetch.config"`.