ADO.NET provider for JSON 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 JSON with Max Pool Size key set to 20.

//接続プーリングを使用する場合: 接続オブジェクトはすでにプール内で使用できるため、時間を節約できます
string documentConStr = $"Data Model=Document;Uri='json_bookstore.json';Json Path='$.bookstore.books'; Max Pool Size = 20";

The following example demonstrates how to disable connection pooling by setting the "Use Pool" property to false in the connection string.

//接続プーリングを使用しない場合
string documentConStr = $"Data Model=Document;Uri='json_bookstore.json';Json Path='$.bookstore.books';Use Pool= false";