# SOA
<a name="API_SOA"></a>

Start of Authority (SOA) properties for a public or private DNS namespace.

## Contents
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 ** TTL **   <a name="cloudmap-Type-SOA-TTL"></a>
The time to live (TTL) for purposes of negative caching.  
Type: Long  
Valid Range: Minimum value of 0. Maximum value of 2147483647.  
Required: Yes

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/servicediscovery-2017-03-14/SOA) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/servicediscovery-2017-03-14/SOA) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/servicediscovery-2017-03-14/SOA)