OpenResty 它打包了标准的 Nginx 核心，很多的常用的第三方模块，以及它们的大多数依赖项。
如果需要nginx的第三方库的时候，可以考虑OpenResty，可以少掉很多安装的麻烦，OpenResty基本上安装了常用的nginx第三方库。
OpenResty的安装：
安装nginx 中 rewrite模块等需要的插件：
apt-get install libreadline-dev libpcre3-dev libssl-dev perl build-essential
下载最新版的OpenResty
http://openresty.org/
wget http://openresty.org/download/ngx_openresty-1.2.7.1.tar.gz
tar -xvf nngx_openresty-1.2.7.1.tar.gz
mv nngx_openresty-1.2.7.1 /usr/local/openresty-1.2.7.1
cd openresty-1.2.7.1
./configure --with-luajit --prefix=/usr/local/openresty
make & make install
这样基本就可以把nginx基本的第三方库安装进去
在/to/nginx/conf 下修改配置文件nginx.config
location /hello {
default_type 'text/plain';
content_by_lua 'ngx.say("hello, lua")';
}
/to/nginx/sbin/nginx #启动nginx
或者/to/nginx/sbin/nginx –s reload #重启nginx
访问localhost/hello
会出现“hello,lua”
让nginx 中的nginx_lua_module支持mysql 和memcache
下载
https://github.com/agentzh/lua-resty-memcached
https://github.com/agentzh/lua-resty-mysql
对于访问接口的统一有很多的处理方式，这里介绍使用nginx lua 访问mysql并用memcache缓存起来。
location /getXxxInfo {
default_type 'text/plain';
content_by_lua '
--先从memcache提取数据
local args = ngx.req.get_uri_args()
if args["appleid"] == nil then
return
end
local memcached = require "resty.memcached"
local memc, err = memcached:new()
if not memc then
ngx.say("failed to instantiate memc: ", err)
return
end
memc:set_timeout(1000) -- 1 sec
local ok, err = memc:connect("192.168.40.xxx", 11211)
if not ok then
ngx.say("failed to connect: ", err)
return
end
local res, flags, err = memc:get(args["appleid"] )
if err then
ngx.say("failed to get dog: ", err)
return
end
--数据不在memcache中 从数据库提取并放到memcache
if not res then
local mysql = require "resty.mysql"
local db, err = mysql:new()
if not db then
ngx.say("failed to instantiate mysql: ", err)
return
end
db:set_timeout(1000) -- 1 sec
local ok, err, errno, sqlstate = db:connect{
host = "xxx.xxx.xx.xxx",
port = 3306,
database = "xxxx",
user = "root",
password = "xxxx",
max_packet_size = 1024 * 1024
}
if not ok then
ngx.say("failed to connect: ", err, ": ", errno, " ", sqlstate)
return
end
--ngx.say("connected to mysql.")
sql = "select * from xxx where xxx = "..args["xxx"]
res, err, errno, sqlstate =
db:query(sql)
if not res then
ngx.say("bad result: ", err, ": ", errno, ": ", sqlstate, ".")
return
end
local cjson = require "cjson"
ngx.say(cjson.encode(res))
local ok, err = memc:set(args["xxxx"], cjson.encode(res))
if not ok then
ngx.say("failed to set dog: ", err)
return
end
local ok, err = db:set_keepalive(0, 100)
if not ok then
ngx.say("failed to set keepalive: ", err)
return
end
return
end
ngx.say(res)
memc:set_keepalive(0, 100)
';
}
posted on 2013-03-21 16:53
漂漂 阅读(17477)
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