T - the route type that represents the opposite endpoint of a pooled
   connection.C - the type of pooled connections.public interface ConnPool<T,C extends ModalCloseable>
ConnPool represents a shared pool connections can be leased from
 and released back to.| Modifier and Type | Method and Description | 
|---|---|
| Future<PoolEntry<T,C>> | lease(T route,
     Object state,
     Timeout requestTimeout,
     FutureCallback<PoolEntry<T,C>> callback)Attempts to lease a connection for the given route and with the given
 state from the pool. | 
| void | release(PoolEntry<T,C> entry,
       boolean reusable)Releases the pool entry back to the pool. | 
Future<PoolEntry<T,C>> lease(T route, Object state, Timeout requestTimeout, FutureCallback<PoolEntry<T,C>> callback)
Please note the connection request can get automatically cancelled by the pool in case of a request timeout.
route - route of the connection.state - arbitrary object that represents a particular state
  (usually a security principal or a unique token identifying
  the user whose credentials have been used while establishing the connection).
  May be null.requestTimeout - request timeout. In case of a timeout the request
                       can get automatically cancelled by the pool.callback - operation completion callback.Copyright © 2005–2022 The Apache Software Foundation. All rights reserved.