打造先進的內存KV數據庫-6 PHP支持

PHP

php作爲使用極廣的程序設計語言，monkey數據庫對php的支持是必須的～

代碼實現

//test.php
<?php
class MonkeyDB
{
    private $socket;

    private function read()
    {
        $data = "";
        $total = 0;
        $t = fread($this->socket,1024);
        for($i = 0;$i < 4;$i++)
        {
            $total *= 256;
            $total += ord($t[$i]);
        }
        $data = substr($t,4);
        $total -= 1024;
        while($total > 0)
        {
            $buf = fgets($this->socket,1024);
            $data .= $buf;
            $total -= 1024;
        }
        return $data;
    }

    private function write($string)
    {
        $total = strlen($string) + 4;
        fwrite($this->socket,strrev(pack("L",$total)).$string);
    }

    public function __construct($addr)
    {
        set_time_limit(0);
        ob_implicit_flush();
        $this->socket = stream_socket_client("tcp://{$addr}:1517");
        if(!$this->socket)
        {
            throw new Exception("monkey 連接失敗！");
        }
    }

    public function __destruct()
    {
        fclose($this->socket);
    }

    //data: string  serialize if necessary
    public function set($key,$data)
    {
        if(!$this->socket)
        {
            throw new Exception("monkey 連接失敗！");
        }
        $this->write("set {$key} ".($data));
        $this->read();
    }

    //return: string
    public function get($key)
    {
        if(!$this->socket)
        {
            throw new Exception("monkey 連接失敗！");
        }
        $this->write("get {$key}");
        $data = $this->read();
        return ($data);
    }

    public function remove($key)
    {
        if(!$this->socket)
        {
            throw new Exception("monkey 連接失敗！");
        }
        $this->write("remove {$key}");
        $this->read();
    }

    public function createDB($dbName)
    {
        if(!$this->socket)
        {
            throw new Exception("monkey 連接失敗！");
        }
        $this->write("createdb {$dbName}");
        $this->read();
    }

    public function switchDB($dbName)
    {
        if(!$this->socket)
        {
            throw new Exception("monkey 連接失敗！");
        }
        $this->write("switchdb {$dbName}");
        $data = $this->read();
    }

    public function dropDB($dbName)
    {
        if(!$this->socket)
        {
            throw new Exception("monkey 連接失敗！");
        }
        $this->write("dropdb {$dbName}");
    }

    //return string
    public function listDB()
    {
        if(!$this->socket)
        {
            throw new Exception("monkey 連接失敗！");
        }
        $this->write("listdb ");
        $data = $this->read();
        return $data;
    }
}

 $monkey = new MonkeyDB("127.0.0.1");
 for($i = 0;$i < 100000;$i++)
    $monkey->set("{$i}","{$i}");

經測試使用php調用，在我的256K緩存CPU，8G筆記本內存可以達到15000req/s每個請求1K數據左右的速度，TCP傳輸也佔用了大量時間，考慮之後進行改進，可以支持批量數據處理，不過單線程速度已經是一流的。