ADO.NET provider for OData implements connection pooling to reduce the efforts of repeatedly opening and closing connections. A connection pool is a cache of database connections maintained where user can reuse existing active connections with the same connection string instead of creating new connections when a request is made to the database.

Connection?pools are used to enhance the performance of executing commands on a database. The provider supports pooling, by default with the pool size set to 100. However, pooling can be disabled by setting the UsePool property to false.

The following code demonstrates the implementation of connection pooling in ADO.Net provider for OData with Max Pool Size key set to 20.

//プーリングを使用する場合: 接続オブジェクトがすでにプール内で使用可能であるため、時間を節約できます。
string connectionString = "Url=https://services.odata.org/V4/Northwind/Northwind.svc; Max Pool Size = 20";

To disable pooling, set the Use Pool key to false in the connection string as shown in the following code:

//プーリングを使用しない場合
string connectionString = "Url=https://services.odata.org/V4/Northwind/Northwind.svc; Use Pool = false";