-uint32_t memcached_instance_set_count(memcached_instance_st *servers, uint32_t count);
-const char *memcached_instance_name(const memcached_server_instance_st self);
-in_port_t memcached_instance_port(const memcached_server_instance_st self);
-uint32_t memcached_instance_response_count(const memcached_instance_st* self);