Constantly returning 503

[nikola-g-kovacevic]

Hi, I have set up everything and I constantly get error 503

This is my limit block

access_by_lua_block {
local ratelimit = require "resty.redis.ratelimit"

        local lim, err = ratelimit.new("one", "2r/s")
        if not lim then
            ngx.log(ngx.ERR,
                 "failed to instantiate a resty.redis.ratelimit object: ", err)
            return ngx.exit(500)
        end
        -- NOTICE: the following call must be per-request.
         -- local redis = require "resty.redis"
         -- local red = redis:new()
         -- red:set_timeout(1000)

         -- local ok, err = red:connect("65.108.155.90", 6379)
         -- if not ok then
         --    ngx.log(ngx.ERR, "failed to connect redis: ", err)
         --    return ngx.exit(500)
         -- end

       local red = { host = "65.108.155.90", port = 6379, timeout = 1 }

        local key = ngx.var.binary_remote_addr
        local delay, err = lim:incoming(key, red)
        if not delay then
            if err == "rejected" then
                return ngx.exit(503)
            end
            ngx.log(ngx.ERR, "failed to limit req: ", err)
            return ngx.exit(500)
        end

        if delay >= 0.001 then
            -- the 2nd return value holds the number of excess requests
            -- per second for the specified key.
            local excess = err

            ngx.sleep(delay)
        end
    }

why do I always have err == rejected? Do I miss something here..