# QueryStringKeyValuePair
<a name="API_QueryStringKeyValuePair"></a>

A key-value pair for query string matching in a routing rule condition.

## Contents
<a name="API_QueryStringKeyValuePair_Contents"></a>

 ** key **   <a name="rtbfabric-Type-QueryStringKeyValuePair-key"></a>
The key of the query string parameter to match. Must contain only RFC 3986 unreserved characters.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 128.  
Pattern: `[A-Za-z0-9._~-]+`   
Required: Yes

 ** value **   <a name="rtbfabric-Type-QueryStringKeyValuePair-value"></a>
The value of the query string parameter to match. Must contain only RFC 3986 unreserved characters.  
Type: String  
Length Constraints: Minimum length of 1. Maximum length of 128.  
Pattern: `[A-Za-z0-9._~-]+`   
Required: Yes

## See Also
<a name="API_QueryStringKeyValuePair_SeeAlso"></a>

For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\+\+](https://docs.aws.amazon.com/goto/SdkForCpp/rtbfabric-2023-05-15/QueryStringKeyValuePair) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/rtbfabric-2023-05-15/QueryStringKeyValuePair) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/rtbfabric-2023-05-15/QueryStringKeyValuePair)