Mongodb的java driver中的Mongo和MongoClient有什么区别

“MongoClient加入到Java驱动程序在2.10作为MongoDB的默认连接类

其实并没有什么区别

不过有时候Mongo 运行得比 MongoClient要快
你可以试一下这个代码，放入1m的文档。Mongo大概用20秒左右，MongoClient要用180秒左右。

function mongo_connect($db, $collection) {
$mongo = new Mongo( 'mongodb://localhost' );
return $mongo->$db->$collection;

}

$mongodb='notificator1';
$mongocollection='tok';
$collection= mongo_connect($mongodb, $mongocollection);

echo $time = microtime(true). "\n";

$i=0;
while ( $i < 1000000 ) {
$row = Array('title' => "test #$i");
$collection->save($row);
++$i;
}

echo microtime(true) - $time;

?>

替换 mongo_connect:
function mongo_connect($db, $collection) {
$m = new MongoClient('mongodb://localhost:27017');
$db = $m->selectDB($db);
return $collection = new MongoCollection($db, $collection);
}