Nginx11 openresty连接redis(lua-resty-redis)

1 官网

　　http://openresty.org/cn/lua-resty-redis-library.html

　　https://github.com/openresty/lua-resty-redis

2 示例

2.1 配置文件

　　/usr/local/openresty/nginx/conf/nginx.conf

　　在server添加一个location

location /lua {
            default_type text/html;
             content_by_lua_file lua/hello.lua;
        }

　　完整的

#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;
    #lua_code_cache off; #热部署，每次执行都编译
    #lua_shared_dict shared_data 1m; #设置nginx全局内存缓存大小

    server {
        listen       8099;
        server_name  localhost;

        #charset koi8-r;

        #access_log  logs/host.access.log  main;

         location /lua {
            default_type text/html;
             content_by_lua_file lua/hello.lua;
        }

        location / {
            root html;
            index  index.html index.htm;
        }

        #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;
    #    }
    #}

}

2.2 添加一个文件hello.lua

　　 代码

---
--- Generated by EmmyLua(https://github.com/EmmyLua)
--- Created by hadoop.
--- DateTime: 2021/12/22 16:29
---

-- 引入redis包 引入的是/usr/local/openresty/lualib/resty/redis.lua
local redis = require "resty.redis"
-- 进行初始化
local redisOb = redis:new()
-- 创建连接
local ok , err = redisOb:connect("127.0.0.1",6379)
-- 设置redis密码
ok, err = redisOb:auth("573875306")

if not ok then
    ngx.say("failed to connect ",err,"<br/>")
    return
end
-- 设置
ok,err = redisOb:set("test","val1")
if not ok then
    ngx.say("failed to set cat: ",err,"<br/>")
    return
end
-- 打印
ngx.say("set result: ", ok,"<br/>")

-- 获取key为test的值
local res,err = redisOb:get("test")

if not res then
    ngx.say("failed to get test: ",err,"<br/>")
    return
end

if res == ngx.null then
    ngx.say("test not found.<br/>")
end

ngx.say("test: ",res,"<br/>")

2.3 访问