nginx+lua+redis构建高并发应用（转）
孔俊爽
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。
备注：centos或者redhat系统请跳转到nginx + ngx_lua安装测试
一.安装lua
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# apt-get install lua5.1
# apt-get install liblua5.1-dev
# apt-get install liblua5.1-socket2
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二.安装nginx
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# 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
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三.安装lua-redis-parser
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# 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
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四.安装json
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# 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/
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五.安装redis-lua
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# git clone https://github.com/nrk/redis-lua.git
# cp redis-lua/src/redis.lua /usr/share/lua/5.1/
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六.配置
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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;
}
}
}
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# vim fuck.lua
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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
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七.测试
# redis-cli -h 192.168.1.39
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redis 192.168.1.39:6379> HMSET ttlsa www www.ttlsa.com mail mail.ttlsa.com
OK
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# curl 'http://192.168.1.211/json?key=ttlsa'
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["www","www.ttlsa.com","mail","mail.ttlsa.com"]
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www.ttlsa.com
http://www.ttlsa.com/nginx/nginx-lua-redis/
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