Cloud CDN is slower than the Cloud storage bucket

Question

I have set up the cloud cdn with using storage bucket as a backend.

I have expected to speed up the load by using cdn.

However, it seems cdn makes it even slower significantly.

Those are the same picture and cdn is pointing at the picture below.

However, it results the top one takes 270ms and bottom one takes 90ms.

When I used AWS CloudFront with the same picture it took 40 ms.

I have a feeling that there is something wrong with the caching because the initial time does not differ as the other url does.

However, the console says cache hit is 100%. (and originally it shows N/A and if I query, then 100%)

I did everything in a "recommended" way and also enabled cdn as instructed.

Any idea? or is it an ordinary behavior?

How did you measure the time ? Was it the download time or the ping ? In my case download times were between 0.003-007s and ping 1,5ms for both (CDN and direct access). Add more details and I can try to help you. — Wojtek_B, May 24 '21 at 14:16
I tested on my side (in europe, France). The first request takes 500ms for both endpoint. But I have to admit that it takes 3 or 4 hits on CDN endpoint , only 1 more for Cloud Storage, to have the same "in cache" performances (50ms). I guess there are several CDN cache servers and I didn't hit the same for all my requests. — guillaume blaquiere, May 24 '21 at 18:57
@Wojtek_B Thank you for the comment Wojtek. I just declared const t1 = Number(new Date()) right before the HTTP call and did Number(new Date()) - t1. So it is a total time spent for the request. — HumbleCoder, Jun 08 '21 at 05:53

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