Cloudflare Developers•8mo ago

Slow cold start and latency for hello world code

Hi, I have a simple worker, deployed recently. The content is a simple hello world provided by the Cloudflare dashboard, the code is the below:

export default {
  async fetch(request, env, ctx) {
    return new Response('Hello World!');
  },
};

export default {
  async fetch(request, env, ctx) {
    return new Response('Hello World!');
  },
};

The worker code was deployed direct by the Cloudflare Dashboard UI, but after this, I see a request time of 180 - 380ms, It's normal? How can I fix it? Some details: Worker URL: https://worker-spring-wildflower-8be3.nuinalp-ltda.workers.dev Plan: Paid (New standard price) CF-Ray Response: 820d6602edec2206-MIA My region: South America (Sao Paulo) Average response time: 130ms - 380ms

5 Replies

kian•8mo ago

MIA means you're being taken to a colo in Miami rather than something close to you (like GRU)

patrickalima98•8mo ago

Is there any specific reason for this? How can I fix it? Or is it a problem with Cloudflare?

zegevlier•8mo ago

?anycast

Flare•8mo ago

Take a look here to see why the Cloudflare datacenter you are routed towards isn't always the closest geographically: https://www.cloudflare.com/en-gb/learning/cdn/glossary/anycast-network/

Cloudflare

What is Anycast? | How does Anycast work? | Cloudflare

Anycast is a network addressing and routing method in which incoming requests can be routed to a variety of different locations. Learn how Anycast works.

patrickalima98•8mo ago

UPDATE: Creating a CNAME on my main domain and pointing it to my Worker, it is now redirecting to GRU and delivering a response rate of 26.4ms

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Slow cold start and latency for hello world code