[@墨玖tao][¥20]学过一套亿级流量缓存架构的课程，里边一个nginx＋lua的定向流量分发，一直调用不了二级nginx

vi /usr/hello/lua/hello.lua

local uri_args = ngx.req.get_uri_args()
local productId = uri_args["productId"]

local host = {"192.168.1.107", "192.168.1.104"}
local hash = ngx.crc32_long(productId)
hash = (hash % 2) + 1
backend = "http://"..host[hash]

local requestPath = uri_args["requestPath"]
requestPath = "/"..requestPath.."?productId="..productId

local http = require("resty.http")
local httpc = http.new()

local resp, err = httpc:request_uri(backend, {

method = "GET",  
path = requestPath

})

if not resp then

ngx.say("request error :", err)  
return  

end

ngx.say(resp.body)

httpc:close()