# VirtualGatewayConnectionPool
<a name="API_VirtualGatewayConnectionPool"></a>

An object that represents the type of virtual gateway connection pool.

Only one protocol is used at a time and should be the same protocol as the one chosen under port mapping.

If not present the default value for `maxPendingRequests` is `2147483647`.

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

**Important**  
This data type is a UNION, so only one of the following members can be specified when used or returned.

 ** grpc **   <a name="appmesh-Type-VirtualGatewayConnectionPool-grpc"></a>
An object that represents a type of connection pool.   
Type: [VirtualGatewayGrpcConnectionPool](API_VirtualGatewayGrpcConnectionPool.md) object  
Required: No

 ** http **   <a name="appmesh-Type-VirtualGatewayConnectionPool-http"></a>
An object that represents a type of connection pool.  
Type: [VirtualGatewayHttpConnectionPool](API_VirtualGatewayHttpConnectionPool.md) object  
Required: No

 ** http2 **   <a name="appmesh-Type-VirtualGatewayConnectionPool-http2"></a>
An object that represents a type of connection pool.  
Type: [VirtualGatewayHttp2ConnectionPool](API_VirtualGatewayHttp2ConnectionPool.md) object  
Required: No

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

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/appmesh-2019-01-25/VirtualGatewayConnectionPool) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/appmesh-2019-01-25/VirtualGatewayConnectionPool) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/appmesh-2019-01-25/VirtualGatewayConnectionPool)