小知识：Nginx+Lua+Redis构建高并发Web应用

复制代码代码如下:

#git clone https://github.com/agentzh/lua-redis-parser.git

 #export LUA_INCLUDE_DIR=/usr/include/lua5.1

 #make CC=gcc

 #make install CC=gcc

复制代码代码如下:

#wget http://files.luaforge.net/releases/json/json/0.9.50/json4lua-0.9.50.zip

#unzip json4lua-0.9.50.zip

 #cp json4lua-0.9.50/json/json.lua /usr/share/lua/5.1/

复制代码代码如下:

#git clone https://github.com/nrk/redis-lua.git

 #cp redis-lua/src/redis.lua /usr/share/lua/5.1/

复制代码代码如下:

        #vi /etc/nginx/nginx.conf

        http {

            include mime.types;

            default_type application/octet-stream;

            access_log logs/access.log;

            sendfile on;

            tcp_nopush on;

            tcp_nodelay on;

            keepalive_timeout 60;

            types_hash_max_size 2048;

            server_tokens off;

            lua_code_cache on;

            upstream redis_pool {

                server 192.168.1.105:6379;

                keepalive 1024 single; 

                //定义连接池大小，当连接数达到此数后，后续的连接为短连接

            }

            server {

                listen 80;

                server_name 192.168.1.104;

                location /get_redis{

                    #internal;

                    set_unescape_uri $key $arg_key;

                    redis2_query hgetall $key;

                    redis2_pass redis_pool;

                }

                location /json {

                    content_by_lua_file conf/test_redis.lua;

                }

            }

        }

复制代码代码如下:

        #vi test_redis.lua

        local json = require(“json”)

        local parser = require(“redis.parser”)

        local res = ngx.location.capture(“/get_redis”,{args = { key = ngx.var.arg_key }})

        if res.status == 200 then

            reply = parser.parse_reply(res.body)

            value = json.encode(reply)

            ngx.say(value)

            a = json.decode(value)

            ngx.say(a[2])

        end

复制代码代码如下:

        #redis-cli -h 192.168.1.105 -p 6379

        redis 192.168.1.105:6379>HMSET testnlr www www.tuohang.net bbs bbs.tuohang.net

复制代码代码如下:

        #curl http://192.168.1.104/json?key=testnlr

        [“www”, “www.tuohang.net”, “bbs”, “bbs.tuohang.net”]