OpenResty 它打包了標準的 Nginx 核心，很多的常用的第三方模塊，以及它們的大多數(shù)依賴項。
如果需要nginx的第三方庫的時候，可以考慮OpenResty，可以少掉很多安裝的麻煩，OpenResty基本上安裝了常用的nginx第三方庫。
OpenResty的安裝：
安裝nginx 中 rewrite模塊等需要的插件：
apt-get install libreadline-dev libpcre3-dev libssl-dev perl build-essential
下載最新版的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
這樣基本就可以把nginx基本的第三方庫安裝進去
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 #啟動nginx
或者/to/nginx/sbin/nginx –s reload #重啟nginx
訪問localhost/hello
會出現(xiàn)“hello,lua”
讓nginx 中的nginx_lua_module支持mysql 和memcache
下載
https://github.com/agentzh/lua-resty-memcached
https://github.com/agentzh/lua-resty-mysql
對于訪問接口的統(tǒng)一有很多的處理方式，這里介紹使用nginx lua 訪問mysql并用memcache緩存起來。
location /getXxxInfo {
default_type 'text/plain';
content_by_lua '
--先從memcache提取數(shù)據(jù)
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
--數(shù)據(jù)不在memcache中 從數(shù)據(jù)庫提取并放到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 閱讀(17518)
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