When resources under a single URI are stored on multiple origin servers, you can create a DNS rule to override the hostname's DNS record and route each request to the correct origin server.
How DNS rules work
After you configure DNS records for your domain name in ESA, clients connect to your origin server based on DNS resolution results such as IP addresses and domain names.
To route requests to different origin servers based on the request path, client location, or other characteristics, you can configure a DNS rule. When a request matches a DNS rule, ESA overrides the standard DNS resolution and returns a new address, such as an A, CNAME, or AAAA record, directing the request to the correct origin server.
Create a DNS rule
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In the ESA console, click Websites. In the Website column, click the target website.
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In the navigation pane on the left, choose .
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Click Create Rule and enter a Rule Name.
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In the If requests match... section, define the rule's conditions. For more information about how to configure a rule expression, see Rule expression components.
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In the DNS record section, click Configure and specify the DNS record value.
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Click OK.
Related documentation
Rule-related features vary in effective priority, reentrancy, and effective granularity. For details, see Properties of Rule-Related Features.