...one of the most highly
regarded and expertly designed C++ library projects in the
world.
— Herb Sutter and Andrei
Alexandrescu, C++
Coding Standards
Determines how to establish a physical connection to the MySQL server.
any_address server_address;
Connections created by the pool will use this address to connect to the server. This can be either a host and port or a UNIX socket path. Defaults to (localhost, 3306).