使用Nginx Lua实现redis高性能http接口时间 2015-01-27 18:26:53  峰云就她了原文  http://xiaorui.cc/2015/01/27/使用nginx-lua实现redis高性能http接口/主题 Lua Nginx HTTP某些时候用python实现的接口性能不够强劲，需要换种方法来提高性能，这不就用lua试试。 常见的redis lua的组合功能 有接口防止过度访问，动态的数据加载，接口的数据缓存 redis没有直接提供一个http的接口， 性能的比较的话，lua的能力要比php、python要强的不少。。。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。。。。Http://xiaorui.ccHttp://xiaorui.ccHttp://xiaorui.cc废话，首先安装nginx，然后加入lua环境。      Pythongit 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;下面是 Nginx.conf 的配置      Pythonserver{    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      Pythonlocal ckid = redis.pcall('get',KEYS[1])local metaif ckid ~= nil then    meta = redis.call('hgetall', ckid)else    meta = 'none'    ckid = 'none'endreturn {ckid, meta}这里再分享一个比较完整的实例：      Pythonlocation /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;   }如果你的逻辑比较简单推荐用lua试试，如果逻辑比较的复杂，那我觉得还是慎重点的，不然花费学习lua的时间还不如用python的tornado flask这样的web框架开个多进程来做端口轮训。