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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1answer
23 views

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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2answers
60 views

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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Does Cloudfront (or any CDN) share cache between edge locations?

I've reviewed the documentation here, but I don't think my specific question is answered, so I'm hoping this community can help me out. I've tried using a VPN for testing different regions but I'm not ...
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152 views

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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3answers
73 views

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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1answer
53 views

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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2answers
49 views

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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11 views

Consultation: Caching Best Practice for an application server running behind CloudFront

I have a kubernetes cluster running a REST API application server consumed by our front end application. This cluster is publicly accessed via AWS Cloudfront for cache, security and constraints ...
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25 views

Website showing correct content in browser but wrong when google fetches it. Can it be a caching issue?

We use cloudflare caching for our massive site which has hundreds of thousands of pages. The site is a news site built in wordpress and most assets are static and suitable for caching. We had a ...
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43 views

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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2answers
126 views

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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2answers
54 views

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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1answer
79 views

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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1answer
53 views

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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1answer
145 views

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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14 views

CDN cache-control max-age set to 10s, yet the file is always more than 1 minute old

I have images that get generated every 2 minutes on my server. I've started using a CDN and have set the cache-control max-age to 10s. I expected this means the file on CDN will get re-cached every ...
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1answer
41 views

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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69 views

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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3answers
518 views

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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1answer
15 views

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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1answer
22 views

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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1answer
39 views

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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1answer
116 views

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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31 views

i need to setup CDN on gcp

I Followed a Blog for setting up the CDN on Google Cloud Services for our Website. But the when I setup the load balancer it gave me an error saying that there is an error in backend services and the ...
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1answer
46 views

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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28 views

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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1answer
125 views

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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133 views

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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2answers
71 views

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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1k views

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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1answer
904 views

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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1answer
139 views

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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53 views

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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17 views

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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3answers
1k views

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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2answers
553 views

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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3answers
584 views

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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1answer
221 views

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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1answer
88 views

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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1answer
123 views

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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1answer
78 views

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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1answer
68 views

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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1answer
132 views

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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How to have cloudfront distribution listen on custom port for HTTPS?

I have setup a Cloudfront distribution on AWS with custom domain name to fetch firmware update file from S3. However, the existing devices that we have with customers make an HTTPS request to that ...
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194 views

CloudFront usually misses from browser, hits from cURL

When I load my HTML page in my browser, all requests for assets have x-cache: Miss from cloudfront. If I reload my browser very quickly, I can sometimes get a Hit. If I open my developer tools and "...
2
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1answer
215 views

Understanding Azure CDN

I am new to Azure CDN. Basically, I am trying to use CDN for my php website images, javascript files and css files. I have created an Azure blob storage, then I added one container and started adding ...
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1answer
52 views

Backend bucket versioning

We have bucket with some files behind the CDN, along with signed URLs. We are using query string with version to update content according to the best practices, e.g. file.ext?v=100. Everthing worked ...
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1answer
24 views

Can I use my own SSL for sub domains which are not using Cloudflare HTTP proxy?

I'm using the cloudflare free plan I have domain.com which will use cloudflare HTTP proxy but i have a subdomain sub1.domain.com which will not use cloudflare's HTTP proxy, can i still use my own SSL ...
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0answers
132 views

Correct log format dependent on route

I have a few virtual hosts running on a server, a couple are through a CDN and have X-Forward-For added to the headesr, sometimes it just goes through a load balancer where RemoteIPHeader is added. I ...

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