windows中nginx配置负载均衡

1、官网下载nginx稳定版

nginx官网

2、下载之后，解压到指定的目录

3、在nginx目录下打开cmd控制台，输入start nginx ，然后在浏览器页面输入localhost，出现如下界面则表示安装成功。默认监听80端口号。

 4、负载均衡配置(打开nginx.conf)

weight代表权重越大则访问该服务的次数占比就越多

设置负载均衡配置(lezu可以任意命令)

 
#user  nobody;
worker_processes  1;
 
#error_log  logs/error.log;
#error_log  logs/error.log  notice;
#error_log  logs/error.log  info;
 
#pid        logs/nginx.pid;
 
 
events {
    worker_connections  1024;
}
 
 
http {
    include       mime.types;
    default_type  application/octet-stream;
 
    #log_format  main  '$remote_addr - $remote_user [$time_local] "$request" '
    #                  '$status $body_bytes_sent "$http_referer" '
    #                  '"$http_user_agent" "$http_x_forwarded_for"';
 
    #access_log  logs/access.log  main;
 
    sendfile        on;
    #tcp_nopush     on;
 
    #keepalive_timeout  0;
    keepalive_timeout  65;
 
    #gzip  on;
	
	#负载均衡配置
	upstream lezu{
		server 127.0.0.1:8080 weight=1;
		server 127.0.0.1:8081 weight=1;
	}
	
    server {
        listen       80;
        server_name  localhost;
 
        #charset koi8-r;
 
        #access_log  logs/host.access.log  main;
 
 
        location / {
            root   html;
            index  index.html index.htm;
			proxy_pass http://lezu;
        }
 
        #error_page  404              /404.html;
 
        # redirect server error pages to the static page /50x.html
        #
        error_page   500 502 503 504  /50x.html;
        location = /50x.html {
            root   html;
        }
 
        # proxy the PHP scripts to Apache listening on 127.0.0.1:80
        #
        #location ~ \.php$ {
        #    proxy_pass   http://127.0.0.1;
        #}
 
        # pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
        #
        #location ~ \.php$ {
        #    root           html;
        #    fastcgi_pass   127.0.0.1:9000;
        #    fastcgi_index  index.php;
        #    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
        #    include        fastcgi_params;
        #}
 
        # deny access to .htaccess files, if Apache's document root
        # concurs with nginx's one
        #
        #location ~ /\.ht {
        #    deny  all;
        #}
    }
 
 
    # another virtual host using mix of IP-, name-, and port-based configuration
    #
    #server {
    #    listen       8000;
    #    listen       somename:8080;
    #    server_name  somename  alias  another.alias;
 
    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}
 
 
    # HTTPS server
    #
    #server {
    #    listen       443 ssl;
    #    server_name  localhost;
 
    #    ssl_certificate      cert.pem;
    #    ssl_certificate_key  cert.key;
 
    #    ssl_session_cache    shared:SSL:1m;
    #    ssl_session_timeout  5m;
 
    #    ssl_ciphers  HIGH:!aNULL:!MD5;
    #    ssl_prefer_server_ciphers  on;
 
    #    location / {
    #        root   html;
    #        index  index.html index.htm;
    #    }
    #}
 
}

配置完成之后通过nginx -s reload命令来刷新配置文件

5、springboot启动两个项目设置端口

--server.port=8080

--server.port=8081

6、通过接口测试工具进行测试访问

http://localhost/deductStock1

    /**
     * 单机业务
     *
     * @return
     */
    @RequestMapping("/deductStock1")
    public String deductStock1() throws InterruptedException {
        /**
         * 单机下单操作
         * 存在的问题：
         * 并发量过大会存在超卖
         */
        //商品数量
//        int stock = Integer.parseInt(redisTemplate.opsForValue().get("stock"));
//        if (stock > 0) {
//            int resultStock = stock - 1;
//            redisTemplate.opsForValue().set("stock", resultStock + "");
//            System.out.println("扣减成功，剩余库存：" + resultStock);
//        } else {
//            System.out.println("扣减失败，库存不足！");
//        }
 
        /**
         * 使用synchronized来进行加锁操作
         * 存在的问题：
         * 分布式多台机器应用下会存在超卖
         */
        synchronized (this) {
            int stock = Integer.parseInt(redisTemplate.opsForValue().get("stock"));
            if (stock > 0) {
                int resultStock = stock - 1;
                redisTemplate.opsForValue().set("stock", resultStock + "");
                System.out.println("扣减成功，剩余库存：" + resultStock);
            } else {
                System.out.println("扣减失败，库存不足！");
            }
        }
 
        /**
         * 使用ReentrantLock加锁
         * 存在的问题：
         * 分布式多台机器应用下会存在超卖
         */
//        lock.lock();
//        try {
//            int stock = Integer.parseInt(redisTemplate.opsForValue().get("stock"));
//            if (stock > 0) {
//                int resultStock = stock - 1;
//                redisTemplate.opsForValue().set("stock", resultStock + "");
//                System.out.println("扣减成功，剩余库存：" + resultStock);
//            } else {
//                System.out.println("扣减失败，库存不足！");
//            }
//        } catch (Exception e) {
//            e.printStackTrace();
//        return "error";
//        } finally {
//            lock.unlock();
//        }
 
 
        return "success";
    }

 成功实现负载均衡效果

 

 

nginx命令

查看Nginx的版本号：nginx -V

启动Nginx：start nginx

快速停止或关闭Nginx：nginx -s stop

正常停止或关闭Nginx：nginx -s quit

配置文件修改重装载命令：nginx -s reload

查看windows任务管理器下Nginx的进程命令：tasklist /fi "imagename eq nginx.exe"