问在实时应用中获取最近位置时的性能问题

EN

public void onLocationChanged(Location location) {
  // get the record
  Record record = client.record.getRecord( "driver/14" );
  // any kind of data path works
  record.set( "position.x", location.getLongitude() );
  //as well as any kind of serializable datatype
  record.set( "position.y", location.getLatitude() );
}

// get the record
var driver = client.record.getRecord( 'driver/14' );

// subscribe to any changes within position
driver.subscribe( 'position', function( position ){
  updateMarker( position.x, position.y );
});