api.lua

-- nginx lua 模块缓存

cjson = require "cjson"
redis = require "resty.redis"


if ngx.req.get_headers()['PARAMS'] == nil then
    ngx.say('params error')
    return
end

j=cjson.new().decode(ngx.req.get_headers()["PARAMS"])
red = redis:new()

red:set_timeout(1000)

ok, err = red:connect("127.0.0.1", 6379)
if not ok then
    ngx.log("LUA REDIS: ", err)
    return
end

akey = j.channel..j.version_code
res, err = red:get(akey)
if not res or res == ngx.null then
     lres = ngx.location.capture("/real/api/base")
     res = lres.body
     red:set(akey, res)
     red:expire(akey, 360)
end

ngx.say(res)