Questions tagged [cdn]

A Content Delivery Network is used to distribute data to end users of an Internet service. It is typically used for large scale distribution, and employs caching and numerous edge locations to speed up and reduce the bandwidth requirements of the process.

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URL returns 403 on the browser but works fine on cURL

I have a strange case that I need help with in order to debug. I have an asset served by Nginx with PageSpeed, and this asset is behind a CDN, BunnyCDN in our case. In the browser, I get HTTP 403 when ...
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iptables: what's the best way to block hackers attacking our site via our CDN IP address

We are using fail2iban on Ubuntu 18 to detect bad login attempts and ban the IP addresses which try too many times. We use iptables for the IP blocking. After using it for a while we noticed that some ...
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Image Storage Options In AWS

In the case of my scenario, The loading issue seems to have been caused by making HTTP requests with no HTTP timeout set to our CDN. The synchronous requests held the page execution for many minutes ...
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CDN video caching duration

Are there any standards about for how long (days, weeks) do CDNs cache video content? This other answer suggested that it is only for a short period of time (e.g. 1 day) but that information is almost ...
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setting up debian bullseye repository WITHOUT a CDN

i have some debian boxes in a DMZ behind a restrictive firewall. The problem is that those boxes are mostly not able to reach the CDN backed org.debian.org-repositories as the IP of deb.debian.org ...
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Rewriting to point to a CDN

I'm hoping to use a CDN to deliver all our image files. We call the images by simply using the CDN's domain instead of our own. I could easily change the domain reference in our content management ...
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Avoid request limit for CDN connections in NGINX server

I need to throttle connections/requests in NGINX server for both http and http2 requests. However, the throttling must not be applied to CDN specific IP addresses (which is already populated in geo ...
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Loading speed / TTFB difference between DNS change and domain transfer?

I am a Web Developer and primarily create Websites with Gatsby.js or Next.js. Most of my Customers either already have a Website or have bought some kind of web hosting to secure their domain name. ...
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GCP CDN network consumption statistics

CDN acceleration service in addition to the original traffic in the network transmission process, due to TCP/IP packet headers, TCP retransmission, there is about 10-15% of network consumption. GCP ...
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Is there any difference between relaying static files and relaying video stream of CDN?

Is there any difference between speed up static files and video stream? whether it need different technology of CDN to meet the different requirement? if the CDN I am using is for speeding up static ...
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IIS URL Rewrite for Azure CDN - is all media from CDN passing through my server?

I am using IIS10 URL Rewrite because we host content with a JavaScript API between the course and the server requiring all to be on the same domain. Am I completely negating the benefit of the ...
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Redirect url to the CDN storage

I have structure folders on my nginx server: Image URL https://example.com/wp-content/uploads/image.jpg https://example.com/wp-content/uploads/WP-data/data/employees/per-005/9032.jpg I want it ...
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Google Cloud CDN setup without subdomain?

After creating load balancer and backend service with Internet network endpoint group Can i use mydomain.com in google cdn or I have to use cdn.mydomain.com? Is there any way to use full domain like ...
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How to prevent DDOS attack impact on Netlify? (downtime + bandwith usage/cost)

Situation: React app that was initially running on a VPS A few days ago, we were the target of a DDOS attack that took the site down. During the attack, we decided to migrate to Netlify. Once ...
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I live in Australia, how is it that Stack Exchange is so fast without using any CDN?

I had a look at the Stack Exchange Servers: https://meta.stackexchange.com/questions/10369/which-tools-and-technologies-are-used-to-build-the-stack-exchange-network Seems they only have two data ...
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Will using reverse proxy negate the effect of CDN?

Goal: Serve a specific sub directory of a domain from a different CDN (cloudfront in our case). We are thinking of utilizing Nginx as a reverse proxy to achieve this. For example, the following ...
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Can CDN caching prevent DoS attacks?

Let's say I use Cloudflare to cache my images, CSS, and JS files. Requests for the HTML content itself still hit my server and an attacker could use that to his advantage. However, if I tell ...
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Do CNAME mapping of my subdomain to Sendgrid for link branding using Amazon Cloudfront CDN

I want to have link branding with SSL on my domain example.com, so I created sub-domain abc.example.com, I want this abc.example.com to CNAME to sendgrid.net. I have done CNAME mapping but it seems ...
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Are we still limited by TCP Window Size when we want to fully utilize bandwidth from far away servers? [closed]

According to this website, as soon as round-trip time is increased, we lose a bit of our real-time capacity throughput to distant servers using default TCP Window size of 64KB. My network bandwidth is ...
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How to get multiple DNS Geo balancing entry points

I am facing a problem. I will set up a CDN with multiple dedicated servers in multiple zones (Asia, US, Eu), and I will set up an entry point with Nginx proxy with geoip routing. But with this ...
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Can we use Indian Server as CDN for German Server?

My client is using Hetzner Cloud Hosting. But his most of the users are from India. So in order to improve the speed we are planning to use $5 Digital Ocean droplet (Indian Data Center) as Proxy with ...
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CloudFront "Compress Objects Automatically" and REST API

I have a cloudfront distribution in front of a REST API server. Just for now, I need to disable cache, so I'm using the Managed-CachingDisabled policy. I can't get any responses to return as gzipped. ...
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Universal bucket in Google Cloud Platform for content, which would determine the user's location and serve content from the closest server?

I am a mobile application developer. I use Google Cloud bucket to store 10-second videos and photos that I use in the application. Thousands of users use the application every day, and I want to use a ...
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AWS Cloud Front, how to request origin using correct url

I'm trying to cache a website that is on an EC2, it has an URL uncached.xyz.com, so i created an Cloud Front with the origin pointed to uncached.xyz.com and created a record xyz.com that points to the ...
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Track outgoing bandwidth usage of single IIS website on my VPS

I want to track OUTGOING bandwidth consumption from a single website in IIS to my site visitors (no internal traffic), e.g. CSS, images, HTML. The reason is that I want to know which package would be ...
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Does Azure CDN support stale-while-revalidate caching?

Does Azure CDN support the stale-while-revalidate and stale-while-error (and immutable, out of curiosity) directives of the Cache-Control HTTP header? These directives are not standardised and both ...
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How to use Cloudflare's CDN while we can not change nameservers on WIX

We have a website on WIX (www.example.com). The domain name and name servers are all on WIX. Using the same domain name we have another website (buy.example.com) which is NOT on WIX. The "A ...
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AWS ACL getting real ip behind third party CDN

We're using third parties CDN WAF from 3 suppliers. I would like to add another layer of protection to the ELB in AWS. How can i make sure the AWS ACLs is getting the real user IP instead of taking ...
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Is there any advantage to using Object Caching (Redis) for DB table caching with a full static caching CDN

I am trying to optimize a small web application(PHP/MySQL), I have been using Redis as a cache for my DB, and I've gotten to the point of preparing to launch for testing. I've been working through an ...
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CDN - SSL and a Wildcard Certificate

My organization has a wildcard certificate for our domain and its subdomains. Lets say *.serverfault.com. We want to use a 3rd party webhost to serve as a CDN for our image content, but we want to ...
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How to set up Google Cloud CDN?

Sorry for my bad english, i translate from russian. I can't figure out how to set up Cloud CDN. To use it I should set up the Load Balancer. I have an external server with web pages. I set up strictly ...
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Does CDN defeat the purpose of server-level GeoIP blocking?

Looking for second opinions. Suppose a website is set up so that only IPs from country X are allowed read/write access. This server goes through a CDN such as Cloudflare. Because the GeoIP block is at ...
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different behaviour per filename and backend routing in NGINX

It's few days i'm bouncing my head on this problem but i cannot find a "elegant" solution. I would like to use a NGINX server as streaming origin for some live channel to be distributed ...
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Could Cloudflare slow down writing process to database?

I have two identical WordPress sites - live and staging - both sitting in the same EC2 server. The live is using Cloudflare, the staging is not. I noticed that database writing processes are slower in ...
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Optimizing IIS for serving static content over TLS

I am trying to fine tune an IIS 10 web server for the sole purpose of serving static files. I've disabled session state, disabled managed code, added all necessary public cache control headers with ...
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if I use imperva CDN - can I avoid re-writing the URLs in my site? how does it work?

I understand that part of onboarding a CDN is re-writing all links to static content in my site from www.example.com/my_img.jpg to www.somecdn.com/my_img.jpg. I learned that from How do CDNs that don&...
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AWS cost explosion with "first 10 TB / month data transfer out beyond the global free tier"

Our costs have really exploded at AWS for a simple EC2 Wordpress installation (and MySQL RDS service) for bandwidth cost. It is listed on the AWS Bill as: first 10 TB / month data transfer out beyond ...
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AWS CloudFront gives 403 error when acessing from registered domain

I have a static website hosted on S3 distributed by CloudFront. If I reach the website through the CloudFront domain (d3agx9libnsfm1.cloudfront.net) it works. But when I try to reach the website ...
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Is it possible to know the location of an Anycast IP since they can be at multiple places at the same time?

With a Unicast IP we can know the geographical location of an IP address easily. But an Anycast IP address can be at multiple locations at the same time and depending on how close you are to the ...
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Why can't I access my WWW prefix domain with CDN?

I know this kind of question have existing solutions , but none of them solve my problems once I enter my web with prefix WWW , it displays such 403 error: 403 error demo This is my Domain parse ...
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How to connect to 4 websockets, 1 of them through my own proxy?

I have an EC2 instance. I need to receive data from 4 separate websockets located in different regions around the world. Three of the websockets are working fine, but one of the websockets is being ...
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5 votes
3 answers
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Redirect apex domain HTTPS requests without manually provisioning a certificate

I'm trying to host a static website on Azure storage with a custom domain and HTTPS. I have created a storage account, uploaded my files, and enabled static site hosting. The site works nicely from ...
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Why do CDNs use different domain names rather than subdomains? [closed]

Many online services configure their networks to use CDNs (content delivery networks) to improve performance by allowing content to be served from geographically close locations. I have noticed that ...
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How Akamai CDN serves the content from closes edge server to user ?a

After going through some resources on google, got the idea how Akamai CDN edge servers works but got some questions about internals. Say I have got static content cached at Akamai CDN(XXX.XX.XXX.XXX ...
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How to use AWS CloudFront for serving both Images and Website?

I have an e-commerce website, an ASP.NET website running on Windows/IIS. Currently I have all my product photos on the local server's File System but since the number of photos are growing I have ...
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Neep help in properly setting up load balancer and googl cloud cdn [closed]

I tried to set up google cloud cdn for my server on google compute engine. I have done everything correct but images on my server are not getting cached. cache hit ratio is n/a. in logs, i am getting ...
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Can I add HubSpot's blog as origin in my CloudFront distribution?

Let's pretend example.com is my domain. I'd like to have: HubSpot's provided landing page at example.com/ HubSpot's provided blog at example.com/blog/ my website hosted on AWS S3 at example.com/map/ ...
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How does cloudflare cdn work?

As far as I understand, you need to enter the original DNS records for the site, and you receive 2 cloudflare nameservers which you put in at the registrar, and cloudflare tests which nameservers are ...
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CDN solution for VOD

We're trying to improve video delivery for a VOD solution. Right now we use over 100Tbytes per month running on several dedicated servers. We have a total of 4 dedicated servers and over the last six ...
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CloudFront - Much higher miss-rate in North America compared to Europe

I'm serving my software downloads from CloudFront. Miss-rate in North America is much higher than in Europe. In America miss-rate is 55.7% while in Europe it's 19.69%. North America: Europe: The ...
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