Openresty安装

1. 安装依赖的软件包

yum install perl gcc kernel-devel
yum install readline-devel pcre-devel openssl-devel gcc

2. 安装openresty

-- 1. 下载openresty源码： http://openresty.org/cn/download.html
$ wget https://openresty.org/download/openresty-1.9.7.4.tar.gz

-- 2. 解压tar包
$ tar xzvf openresty-1.9.7.4.tar.gz

-- 3. 配置编译选项，可以根据你的实际情况增加、减少相应的模块
$ ./configure --prefix=/opt/openresty --with-luajit --without-http_redis2_module --with-http_iconv_module

-- 4. 编译并安装
$ make
$ make install 

3. HelloWorld

-- 1. 修改配置文件如下：
$ cat /opt/openresty/nginx/conf/nginx.conf
worker_processes  1;
error_log logs/error.log info;

events {
    worker_connections 1024;
}

http {
    server {
        listen 8003;

        location / {
            content_by_lua 'ngx.say("hello world.")';
        }
    }
}

-- 2. 启动nginx
$ /opt/openresty/nginx/sbin/nginx

-- 3. 检查nginx
$ curl http://127.0.0.1:8003/
hello world.

4. 性能测试

-- 1. 安装压力测试工具
$ yum install httpd-tools

-- 2. 测试
$ ab -c10 -n50000 http://localhost:8003/
...
Concurrency Level:      10
Time taken for tests:   2.825 seconds
Complete requests:      50000
Failed requests:        0
Write errors:           0
Total transferred:      8050000 bytes
HTML transferred:       650000 bytes
Requests per second:    17697.26 [#/sec] (mean)
Time per request:       0.565 [ms] (mean)
Time per request:       0.057 [ms] (mean, across all concurrent requests)
Transfer rate:          2782.48 [Kbytes/sec] received
...