Definicja connection pooling (EP)

Connection pooling enables an application to use a connection from a pool of connections that do not need to be reestablished for each use. Once a connection has been created and placed in a pool, an application can reuse that connection without performing the complete connection process.

This can result in significant performance gains, because applications can save the overhead involved in making a connection. This can be particularly significant for middle-tier applications that connect over a network or for applications that repeatedly connect and disconnect, such as Internet applications.

In addition to performance gains, the connection pooling architecture enables an environment and its associated connections to be used by multiple components in a single process. This means that stand-alone components in the same process can interact without being aware of each other. A connection in a connection pool can be used repeatedly by multiple components.

Source: MSDN Online Library