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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Upload directory from my NGINX server

I have nginx with RTMP module on my server. I want to know: there is some way to upload a directory each time a new file is created to another server? Example: My server create HLS playlists in my /...
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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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117 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
35 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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21 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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24 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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44 views

How to setup CDN site on IIS 10.0 (Windows Server 2016)?

I'm working on a project for a client where I need to set up a Content Delivery Network site for serving static files (images only, for now). I've found a couple of questions on how to setup this on ...
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Is there a way we can create a CDN link?

Is there a way we can create a CDN link for our files so that others can use it by linking the CDN link just like we do for bootstrap and angular? If yes, can someone tell me how to achieve that?
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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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3answers
196 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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Can Akamai choose the closest origin server?

I expect to have 1000 origin servers to pick from. Are Akamais POPs able to select the closest somehow to make dynamic traffic super-fast, like 1 ms per request?
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Why do CDNs use different domain names rather than subdomains? [closed]

Many online services configure CDNs (content delivery networks) to improve performance by allowing content to be served from geographically close locations. I have noticed that very often the CDN is ...
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Amazon CloudFront CDN and role-based access (RBAC)

I have web-service that stores uploaded images to S3. These images then get distributed to the CloudFront CDN and served by signed URLs. I.e. only authorized users who have a URL signature can access ...
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3answers
385 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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88 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
86 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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51 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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ImageResizer missing query string redirects to Azure Blob

I'm using Imageresizer in combination with BlobStorage & AzureCDN, but for some reason when I try to access the following url: https://{azurecdn}.net/{blobstoragename}/{optional_folder}/{filename}...
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73 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
59 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
93 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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484 views

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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128 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 "...
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1answer
162 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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49 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
23 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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115 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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256 views

Cloudfront: How to test Path Pattern matching without deploying any changes

I just need a way to test my path pattern for cloudfront first before saving the behavior for the pattern because I noticed that it's taking more than a few minutes for the changes to be deployed. ...
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1answer
33 views

One domain, one wordpress system, different locations, different servers, low bandwith

I have a website with a low bandwidth (like 80.000 views per month, 1 mega or so every page) but that offers products to clients all over the world. A very specific business. The server is located in ...
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2answers
98 views

How does a request gets directed to a nearby CDN edge server? [duplicate]

Let's say I have a website with a domain name, of course. The domain name has: One A record(example.com) which points to the origin server(or load balancer). One CNAME record(cdn.example.com) ...
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1answer
3k views

Configure AWS Cloudfront to log to S3 bucket in another AWS account

I have some AWS Cloudfront distributions spread out across different AWS accounts. I'd like to store the access logs from these distributions in a single S3 bucket in a single AWS account. This is ...
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488 views

CDN: Synchronizing cache across edge machines

I built a cheap CDN for my static website based on nginx’s HTTP caching. Context. Here’s are some parts of my cache configuration: proxy_cache_key "$scheme://$host$uri"; proxy_cache_valid 200 301 ...
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1answer
455 views

Google cloud cdn - unclear cache hit ratio

I'm using google cloud cdn (Load balancer with a backend service) and the hit ration status is not very clear. In the image below you can see: Left image - CDN view - Value of cache hit ratio is "n/...
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1answer
1k views

Cannot Set Up Naked Domain on Azure CDN

What I am using: Azure CDN: Premium Verizon DNS: DnsMadeEasy I am struggling to setup all endpoints of my domain on Azure CDN; I am able to set up endpoints with a prefix to my domain (i.e prefix....
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1k views

Almost all the http APIs return a 502 bad gateway error after adding a CDN

I just added my website to a CDN provider https://www.qiniu.com/en. Then I realised that almost all my http APIs (https://www.funfun.ink/httpOnly...) returned a 502 bad gateway error. Additionally, ...
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68 views

Real World Architecture [closed]

I am kind of confused about the way real-world web applications are architectured and I would be happy for some clarification . I know that there are many methods and different approaches but an ...
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1answer
135 views

No static file is cached

I have set up CloudFlare for my website http://www.funfun.org.cn, the caching level is Standard and The development mode is Disabled. By loading the home page http://www.funfun.org.cn/1/#/home, I ...
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3k views

Is there any way to use a Google-managed SSL certificate when using Google Cloud CDN?

This would be similar to AWS Cloudfront which can use a certificate that is generated by AWS for you. Is there anything like that here? This would be mostly for cost or ease of use reasons.
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86 views

Switch between using / not using CDN

Previously, I have used CloudFlare, where we can switch quickly between "active mode" and "development mode". In "development mode", static files are loaded directly from the origin server rather than ...
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371 views

403 forbidden error after adding a CDN

Previously, http://www.funfun.org.cn worked in my browser. Then, I decided to add a CDN on top of it. So I added a CNAME for www.funfun.org.cn to funfun.org.cn.w.kunluncan.com. As a result, ping www....
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1answer
405 views

How does “Disable cache” work?

I have a website managed by CloudFlare and its CDN. when we choose Disable cache in Dev Tools of Google Chrome like here, by definition the browser refreshes static files. However, I would like to ...
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849 views

How to reduce TTFB time?

I have a website hosted by DigitalOcean (1GB Memory/20GB Disk/LON1) and CloudFlare. Lots of external librairies were from cdnjs.com, which worked well in Europe and US, but they were not stable in ...
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1k views

CloudFront HTTP/2 slower (high TTFB) than HTTP/1.1

My site was running on HTTP/1.1 with CloudFront at front, Webpagetest reports the load time usually at 2 seconds. Yesterday I enabled HTTP/2 (and SSL) on CloudFront, expecting to see an improvement. ...
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122 views

How to cache some requests based on request rate?

We have some super heavy APIs, say /api/heavy, it will slow down our system when peak time, we did some benchmark, if the simultaneous request count is greater than 200, the system becomes slow, and ...
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17 views

Proper way to handle file serving

We have a website where we our daily bandwidth use is roughly 10GB of user generated contents. The software layer is simply Heroku + some addons for DB and monitoring, and we are handling the uploads ...
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1answer
360 views

Nginx drops HTTPS from Akamai during rewrite

Akamai passes the HTTPS request to Nginx and Nginx drops HTTPS from the request as it performs a redirect. Here are the results from curl: $ curl -v -L https://oursite.com/life/facts-and-arguments/ ...
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0answers
249 views

WordPress site behind CDN; want -origin to bypass CDN

For a multi environment setup I have the following: https://www.example.com/ => CloudFront => https://www-origin.example.com/ => WordPress FastCGI This works fine. However I would like to be able to ...
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444 views

Cloudfront not compressing Transfer-encoding chunked

My setup looks like this: User->Cloudfront->Nginx->gunicorn Apparently nginx, doesn't compress (gzip) when there is a CDN inbetween (Via header present) so my nginx sends: Transfer-encoding: chunked ...
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1answer
65 views

Do I really need cdn for video delivery? [duplicate]

If I'm going to create video delivery site for big country (Russia), should I use CDN for video? I believe, that store video in two places, Tokyo (for East part of country) and Frankfurt (for West ...

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