redis没有直接提供一个http的接口，要是用php，python，当然也是可以实现的。

性能的比较的话，lua的能力要比php强的不少。。。

网上有很多的性能的比较，我也做过几次的压力测试，lua的性能确实很强。。。。

安装nginx，以及lua环境

git clone https://github.com/simpl/ngx_devel_kit.gitgit clone https://github.com/chaoslawful/lua-nginx-module.gitgit clone https://github.com/agentzh/redis2-nginx-module.gitgit clone https://github.com/agentzh/set-misc-nginx-module.gitgit clone https://github.com/agentzh/echo-nginx-module.gityum  -y install pcre pcre-dev*wget http://nginx.org/download/nginx-1.3.14.tar.gztar zxvf nginx-1.3.14.tar.gzcd nginx-1.3.14./configure --prefix=/usr/local/nginx --add-module=../ngx_devel_kit/ --add-module=../lua-nginx-module --add-module=../redis2-nginx-module --add-module=../set-misc-nginx-module --add-module=../echo-nginx-modulemake && make install

注：在 server 段里，加入代码，如果不加此代码或者设置为 on 时，则需要重启 Nginx。

lua_code_cache off;

Nginx.conf

server{      listen 80;      server_name test.lua.com;                                                                                                                                                                                                                                                                        #http://test.lua.com/lua      location /hello {         default_type "text/plain";         content_by_lua 'ngx.say("Nginx Lua Hello!")';      }                                                                                                                                                                                                                                                                        #GET http://test.lua.com/get?key=key      location /get {          set_unescape_uri $key $arg_key;          redis2_query get $key;          redis2_pass 127.0.0.1:6379; #配置redis访问      }                                                                                                                                                                                                                                                                        #SET http://test.lua.com/set?key=key&val=value      location /set {          set_unescape_uri $key $arg_key;          set_unescape_uri $val $arg_val;          redis2_query set $key $val;          redis2_pass 127.0.0.1:6379;      }}重启Nginx/etc/init.d/nginx restart

也可以直接用lua调用redis的接口

local ckid = redis.pcall('get',KEYS[1])local metaif ckid ~= nil then    meta = redis.call('hgetall', ckid)else    meta = 'none'    ckid = 'none'endreturn {ckid, meta}

分享一个完成的实例：

location /foo {       set $value 'first';       redis2_query set one $value;       redis2_pass 127.0.0.1:6379;   }   # GET /get?key=some_key   location /get {       set_unescape_uri $key $arg_key;  # this requires ngx_set_misc       redis2_query get $key;       redis2_pass foo.com:6379;   }   # GET /set?key=one&val=first%20value   location /set {       set_unescape_uri $key $arg_key;  # this requires ngx_set_misc       set_unescape_uri $val $arg_val;  # this requires ngx_set_misc       redis2_query set $key $val;       redis2_pass foo.com:6379;   }   # multiple pipelined queries   location /foo {       set $value 'first';       redis2_query set one $value;       redis2_query get one;       redis2_query set one two;       redis2_query get one;       redis2_pass 127.0.0.1:6379;   }   location /bar {       # $ is not special here...       redis2_literal_raw_query '*1\r\n$4\r\nping\r\n';       redis2_pass 127.0.0.1:6379;   }   location /bar {       # variables can be used below and $ is special       redis2_raw_query 'get one\r\n';       redis2_pass 127.0.0.1:6379;   }   # GET /baz?get%20foo%0d%0a   location /baz {       set_unescape_uri $query $query_string; # this requires the ngx_set_misc module       redis2_raw_query $query;       redis2_pass 127.0.0.1:6379;   }   location /init {       redis2_query del key1;       redis2_query lpush key1 C;       redis2_query lpush key1 B;       redis2_query lpush key1 A;       redis2_pass 127.0.0.1:6379;   }   location /get {       redis2_query lrange key1 0 -1;       redis2_pass 127.0.0.1:6379;   }