openresty && hashids&& redis 生成短链接

luarocks install hashids

location /test {
   content_by_lua_block {
    -- 此处为伪代码，需要自己处理，代码见下面的
    ngx.say(hashid) 
   }
}

 local hashids = require("hashids");
            local redis = require "resty.redis"
	    local red = redis:new()
            local ids= 1;
            red:set_timeout(1000) -- 1 sec
            local ok, err = red:connect("127.0.0.1", 6379)
            if not ok then
              ngx.say("failed to connect: ", err)
             return
            end
            ids, err = red:incrby("ids", 1)
            if not ok then
              ngx.say("failed to set ids: ", err)
             return
            end
            -- ngx.say("set result: ", ok)
	    local ok, err = red:set_keepalive(10000, 100)
            if not ok then
    	     ngx.say("failed to set keepalive: ", err)
            return
            end

 local h = hashids.new("dalong")
            hash = h:encode(ids)
	    ngx.say(hash)

local hashids = require("hashids");
local h = hashids.new("dalong")
hash = h:decode("y71ZEKxm")
print(hash[1])

  实际系统如果使用还需要考虑redis 的高可用，安全，以及如何进行数据分析的问题