nginx+lua+redis构建高并发应用

ngx_lua将lua嵌入到nginx，让nginx执行lua脚本，高并发，非阻塞的处理各种请求。

url请求nginx服务器，然后lua查询redis，返回json数据。

一.安装lua

# apt-get install lua5.1

# apt-get install liblua5.1-dev

# apt-get install liblua5.1-socket2

二.安装nginx

# apt-get install git-core

# git clone https://github.com/simpl/ngx_devel_kit.git

# git clone https://github.com/chaoslawful/lua-nginx-module.git

# git clone https://github.com/agentzh/redis2-nginx-module.git

# git clone https://github.com/agentzh/set-misc-nginx-module.git

# git clone https://github.com/agentzh/echo-nginx-module.git

# git clone https://github.com/catap/ngx_http_upstream_keepalive.git

# apt-get install libpcre3 libpcre3-dev libltdl-dev libssl-dev libjpeg62 libjpeg62-dev libpng12-0 libpng12-dev libxml2-dev libcurl4-openssl-dev libmcrypt-dev autoconf libxslt1-dev libgd2-noxpm-dev libgeoip-dev libperl-dev -y

# wget http://nginx.org/download/nginx-1.0.8.tar.gz

# tar zxvf nginx-1.0.8.tar.gz

# cd nginx-1.0.8

# ./configure –prefix=/usr/local/nginx –with-debug –with-http_addition_module \

–with-http_dav_module –with-http_flv_module –with-http_geoip_module \

–with-http_gzip_static_module –with-http_image_filter_module –with-http_perl_module \

–with-http_random_index_module –with-http_realip_module –with-http_secure_link_module \

–with-http_stub_status_module –with-http_ssl_module –with-http_sub_module \

–with-http_xslt_module –with-ipv6 –with-sha1=/usr/include/openssl \

–with-md5=/usr/include/openssl –with-mail –with-mail_ssl_module \

–add-module=../ngx_devel_kit \

–add-module=../echo-nginx-module \

–add-module=../lua-nginx-module \

–add-module=../redis2-nginx-module \

–add-module=../ngx_http_upstream_keepalive \

–add-module=../set-misc-nginx-module

# make

# make install

三.安装lua-redis-parser

# 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

四.安装json

# 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/

五.安装redis-lua

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

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

六.配置

user www-data;

worker_processes 8;

worker_cpu_affinity 00000001 00000010 00000100 00001000 00010000 00100000 01000000 10000000;

error_log logs/error.log notice;

pid logs/nginx.pid;

worker_rlimit_nofile 60000;

events {

worker_connections 1024;

use epoll;

}

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 192.168.1.39:6379;

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 192.168.1.211;

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/fuck.lua;

}

}

}

# vim fuck.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

七.测试

# redis-cli -h 192.168.1.39

redis 192.168.1.39:6379> HMSET ttlsa www www.ttlsa.com mail mail.ttlsa.com

OK

# curl ‘http://192.168.1.211/json?key=ttlsa’

["www","www.ttlsa.com","mail","mail.ttlsa.com"]

www.ttlsa.com