=== Server load balancing

You can configure the pool with a list of servers instead of a single server.

[source,$lang]
----
{@link examples.SqlClientExamples#poolConfig01}
----

The pool uses a round-robin load balancing when a connection is created to select different servers.

NOTE: this provides load balancing when the connection is created and not when the connection is borrowed from the pool.

=== Pool connection initialization

You can use the {@link io.vertx.sqlclient.Pool#connectHandler} to interact with a connection after it
has been created and before it is inserted in the pool.

[source,$lang]
----
{@link examples.SqlClientExamples#poolConfig02}
----

Once you are done with the connection, you should simply close it to signal the pool to use it.

=== Dynamic connection configuration

You can configure the pool connection details using a Java supplier instead of an instance of `SqlConnectOptions`.

Since the supplier is asynchronous, it can be used to provide dynamic pool configuration (e.g. password rotation).

[source,$lang]
----
{@link examples.SqlClientExamples#dynamicPoolConfig}
----
