About CouldFlare Argo

Website, Application, Performance Argo
1

Recently, I want to use Couldflare DNS Server.
I’ve found that Cloudflare has lots of feature so that I’ve tried and test some of that.

It’s a little bit strange about the Argo feature.
It should be more efficient to cache the request.

But when I turn on the Argo feature, it seems worse than turning off the feature.

I have two Cloudflare account, one is free and one is pro with argo feature on.
My test procedure:

  1. Bind free Cloudflare cdn to my heroku app and refresh the app repeatedly. --> heroku app is fine.
  2. Bind pro Cloudflare cdn with Argo on to the same heroku app and again refresh the app repeatedly.
    –> app timeout and crash easily just in few seconds.

Is there anyone know how the argo works or why turning on Argo makes worse performance?

2

Are the two tests similar on caching policy?

3

I think so.
The same server, same page.
Just use different Cloudflare dns.

4

I asked because suspect the fast one uses cache while the other asks the origin. Can you make the request with curl and check cache header?

curl -svo /dev/null https://yourdomain.com

If result contains CF-Cache-Status: HIT then response is coming from CF edge servers otherwise it is coming from origin (your server).

5

I’ve done that and there’s no CF-Cache-Status: HIT in the fast one.

Actually, I didn’t set any Cache policy in Cloudflare and my testing page need to login.
response header show cache-control: private

6

Then Argo (Cloudflare internal VPN with optimized routing) is slowing down your website in this case :thinking: assuming ceteris paribus.

1 Like
7

Yeah, I was confused.

8

sound like something in your tests is not right

you are saying turning argo on, make your heroku app crash? I dont see how its even possible or why

9

Well, that’s the fact.

Everything is the same besides Cloudflare CDN.
I currentlty dont’t want to turn argo off because it will be billed again if I turn on again.

10

The other similar incidence turned out to be a provider problem.

11

what do you see in your heroku graphs\logs? cpu\memory\hard disk - any error logs? I anyway would contact heroku support