nginx配置,负载均衡
如果微服务只能远程调用一个服务端,那就失去意义了.用Nginx可以实现健康检测和负载均衡策略的配置.使得服务端具有扩展性和高可用性.

    upstream userservice {
        server 127.0.0.1:9002; 
        server 127.0.0.1:9003; 
    }
    server {
        listen 80;

        location / {
            proxy_pass http://userservice;
            proxy_set_header Host $host;
            proxy_set_header X-Real-IP $remote_addr;
            proxy_set_header X-Forwarded-For $proxy_add_x_forwarded_for;
            proxy_set_header X-Forwarded-Proto $scheme;
        }
    }

微服务端用webmen实现
IndexController

<?php

namespace app\controller;

use support\Request;

class IndexController
{
    public function rpc(Request $request)
    {
        $class_name="app\\service\\".$request->post('class');
        $obj=new $class_name;
        $res=call_user_func_array([$obj,$request->post("method")], $request->post('params'));
        return $res;
    }
}

Service

<?php
namespace app\service;

use app\model\User;
use support\Model;

class My
{
    public function mymethod($name){
        $data="yout input name is ".$name;
         return json_encode(["code"=>0,"message"=>"成功","data"=>$data]);
    }
}

http端口设置9002

<?php
/**
 * This file is part of webman.
 *
 * Licensed under The MIT License
 * For full copyright and license information, please see the MIT-LICENSE.txt
 * Redistributions of files must retain the above copyright notice.
 *
 * @author    walkor<walkor@workerman.net>
 * @copyright walkor<walkor@workerman.net>
 * @link      http://www.workerman.net/
 * @license   http://www.opensource.org/licenses/mit-license.php MIT License
 */

return [
    'listen' => 'http://0.0.0.0:9002',
    'transport' => 'tcp',
    'context' => [],
    'name' => 'webman',
    'count' => 32,
    'user' => '',
    'group' => '',
    'reusePort' => false,
    'event_loop' => '',
    'stop_timeout' => 2,
    'pid_file' => runtime_path() . '/webman.pid',
    'status_file' => runtime_path() . '/webman.status',
    'stdout_file' => runtime_path() . '/logs/stdout.log',
    'log_file' => runtime_path() . '/logs/workerman.log',
    'max_package_size' => 10 * 1024 * 1024
];

启动webman

php start.php start -d

复制服务端项目,用9003端口启动一下

客户端用thinkphp 和 GuzzleHttp 实现

<?php
namespace app\rpc_service;

use GuzzleHttp\Client;

class UserService{

    /**
     * @param $class
     * @param $method
     * @param $params
     * @return mixed
     * @throws \GuzzleHttp\Exception\GuzzleException
     */
    public function get($class,$method,$params=[]){
        $client = new Client();
        $res = $client->post("http://127.0.0.1:80/index/rpc",['form_params' => [
            'class' => $class,
            "method"=>$method,
            "params"=>$params
        ]]);

        $json=$res->getBody()->getContents();

        return json_decode($json,true);
    }
}

调用

<?php

namespace app\controller;

use app\BaseController;
use app\rpc_service\UserService;
use GuzzleHttp\Client;

class Index extends BaseController
{
    public function hello()
    {
        $UserService=new UserService();
        $res= $UserService->get("My","mymethod",["name"=>"xiang"]);
        return json_encode($res);
    }
}

{
    "code": 0,
    "message": "成功",
    "data": "yout input name is xiang"
}

性能损耗
thinkphp本地 QPS 6000多
本地远程调用 QPS 4000多