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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Multiple data centers and HTTP traffic: DNS Round Robin is the ONLY way to assure instant fail-over?
Multiple A records pointing to the same domain seem to be used almost exclusively to implement DNS Round Robin as a cheap load balancing technique.
The usual warning against DNS RR is that it is not ...
- 1,113
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2
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No Cache-Control Header for files from AWS CloudFront with S3 Origin
We just migrated to Amazon AWS. We currently have an EC2 instance that's working well. It's running Nginx in front and Apache in the back-end. That's running well also. All sites are launched properly ...
- 2,006
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5
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Does CURL cache requests?
This is a pretty long question, so bear with me.
I wanted to stress my Akamai Server logged in from an AWS instance. So, I started running ab benchmark. However, they seemed ridiculously fast to ...
18
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5
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How to do regional DNS like a CDN does?
I guess this question could be entitiled, how do CDN's work at the DNS level but the real problem I have is that my company has datacenters in three continents and we have to have europe.example.com ...
- 1,155
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6
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When does a CDN (content delivery network) become worth it?
At what point is it worth adding a CDN (content delivery network) to your website? Does it make sense to use it for a relatively low traffic website that's a web application? The clients are all over ...
- 1,434
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CDN: How is it possible that my DNS delivers a different IP depending on the visitors location?
I found this explanation how a CDN works. But there is one thing I don't really understand. Let's assume I setup multiple DNS servers at my location and they use the nameserver domains dns1.example....
- 523
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2
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Using Google's App Engine as CDN for static files
I am planning on moving my static files to Google's App Engine. I was wondering if this is a good idea to do.
I have read that is it possible that Google will cache your files on multiple locations, ...
google-app-engine
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5
answers
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How can I verify that an RTMP stream URL is working?
I have been put in charge of setting up a CDN account for streaming video but am not actually running the site that will host the content. How can I test that a published RTMP URL is working? Do I ...
- 3,556
11
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7
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Looking for a recommendation on measuring a high availability app that is using a CDN
I work for a Fortune 500 company that struggles with accurately measuring performance and availability for high availability applications (i.e., apps that are up 99.5% with 5 seconds page to page ...
- 213
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Does a CDN still work even when my server is down?
I am a website owner planning to use Amazon's cloudfront S3. I have been reading all the stuffs about what a CDN can do but i still have an unanswered question.
Does a CDN still work even when my ...
- 101
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How to redirect users to different servers based on their location?
I have a website which is developed by using ASP.NET and MY DB is MySQL. Currently it hosted in USA Servers. But When I try to access it near India dynamic contents are loading too slowly. It is ...
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Should AWS CloudFront *increase* load time for infrequently accessed files?
I am new to CDNs and experimenting with CloudFront. I have set everything up and all appears to be working fine. I can create a static image on a page and access it though my CloudFront distribution. ...
- 257
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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 ...
- 3,489
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How do CDN (Content Delivery Networks) server work?
There are many CDN (Content Delivery Networks) for hosting mainly static content. How do they work? How they handle http requests?
8
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3
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Using EC2 as a Cloudfront Origin Server
Amazon has recently added the ability to use any server as an origin server for Cloudfront, removing the original S3 only restriction.
My question is- how do I set this up? The AWS web-gui seems to ...
- 2,609
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1
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Amazon S3 appears to be blocking cloudflare IP addresses. How do I fix it?
I have static content that is being served by Cloudflare. Cloudflare points to Amazon S3 to pick up the static content and serves it via a CNAME (cdn.mydomain.com). The bucket is setup properly and ...
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Is subdomain (CNAME) slower than using original address?
I am no expert at this at all, so I am wandering is there a difference in speed, etc. when using some subdomain (CNAME record) over the original address?
For example, when using CDN like Amazon S3. ...
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1
answer
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AWS Cloudfront + Load Balancer, url changes from main domain to load balancer subdomain
My setup is as follows:
user types example.com on the browser
request goes to AWS CloudFront, which redirects HTTP to HTTPS, and
forwards the request to the AWS Elastic LoadBalancer
(elb.example.com)
...
- 241
7
votes
1
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Akamai / CDN - How much do CDNs like akamai cost? [closed]
I haven't been able to find any numbers related to cost via google or price sheets. How much do these services realistically cost (akamai, limelight, any of them)? Are there any good CDN review/...
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Firewall rule to allow access to windows updates or other resources on a CDN?
What's the best way to poke a firewall hole in a border firewall to allow windows updates?
As far as I can tell, the windows update sites are hosted on a content distribution network that can ...
- 11.9k
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2
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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 secure is CloudFlare's basic SSL
CloudFlare's basic SSL package provides SSL encryption for you site, but only between your customer's browser, and the CloudFlare server where SSL is terminated. The connection between CloudFlare and ...
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Akamai NetStorage vs. Akamai edge service
What's the difference between using Akamai NetStorage vs. Akamai's Edge Service? Below are the concepts that I believe differentiate them but I'd like more details from more experienced people.
...
- 2,091
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SSL Cert for custom domain endpoint on Azure CDN
We have some content hosted for our Azure application on the Azure CDN - we can access this nicely over https using the standard endpoint address, however for 'neatness' our customer would like to use ...
- 163
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Akamai vs smaller CDN for small/medium-size ecommerce traffic? (caching, latency, NetStorage)
The small/medium sized online retail company I work for uses Akamai as our CDN for static images, but I'm wondering whether it might be hurting rather than helping and, if it's suboptimal, what we ...
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CDN vs own apache servers?
i know that CDN is just for static contents. but then i still have to spread out by apache servers to all corners of the world right? so when i have done it, why dont i just set up some dedicated ...
- 1,245
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How can I handle big traffic spikes on my dedicated server?
I have an E-Commerce site, which gains a sudden peak of very high traffic when I turn on different ads campaigns.
From this moment on, my current dedicated server (Hostgator, 4GB Memoray, 100mbps ...
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1
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How to set up a private CDN using nginx?
Here is the problem: I have a Linux server in Europe serving a busy Drupal site using nginx+php-fpm, I have another Linux server in the US (where a big portion of my visitors are coming from). The ...
- 3,137
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How to Tell Whether a site is using Akamai Networks
I'm trying to understand precisely how Akamai uses DNS lookups to redirect users to proximate servers. As I understand it, the client's browser tries to resolve a DNS name, such as a388.g.akamaitech....
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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 ...
- 151
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What are the benefits and drawbacks of using ETag vs LastModified as a CDN cache validator?
I'm reading this article on Azure CDN. I can either control caching with:
An ETag
Last Modified
Default heuristics
What are the benefits and drawbacks of the first two choices? Does it matter?
...
- 8,931
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6
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How to upload files from Amazon EC2 server to S3 bucket?
What is the default way to upload files from a EC2 web server to a S3 bucket for content delivery?
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Do CDN providers run their own DNS servers?
In order to have efficient CDN, it needs to direct requests to the server nearest to the requester.
How do they do that? Do they run their own DNS server that, when asked to resolve an address, it ...
- 819
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votes
4
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AWS S3, CloudFront, web font CORS error
I've just moved from my previous CDN to CloudFront for two of my websites. First one is working fine but I used the same snapshot in DigitalOcean to create the 2nd site and here I am getting
...
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Etag configuration with multiple apache servers or CDN / How does Google do ETags?
I have an application which is served from two apache2 servers and I want to configure the ETags on static content. In the future I would also like to use a CDN. I see that this is supposed to be a ...
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scalability: when to use CDN?
i've read about CDN but dont know exactly what it is for.
lets say i've got an international social network (text and image content), and it's growing in traffic from different countries, do i have ...
- 1,245
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votes
1
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Setting up CloudFront CDN on a cookieless root domain
I have recently set up an AWS S3 bucket for my site's static content, along w/ a CloudFront distribution for my CDN. I have this working using a sub-domain.
However, after running YSlow, I realized ...
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votes
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Pointing www to a CDN(Akamai)
Why would someone point(CNAME) www.example.com to a cdn?
When I run host on Etsy, I get a
[c]$ host www.etsy.com
www.etsy.com is an alias for www.etsy.com.edgekey.net.
www.etsy.com.edgekey.net is an ...
- 4,423
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votes
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CloudFront - Users requests static files non-stop to make your bill high?
I had this weird wondering once.
If I am using CloudFront as my CDN, I pay per requests made on my static files.
So here comes the wondering. Can one keep requesting the same file in a non-stop ...
- 1,938
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which CDNs are popular websites using? [closed]
i wonder which CDNs popular websites are using?
is there a list giving some more information about this?
would be great to have some more insight.
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How to compare CDN services?
What are the metrics and their priorities to compare various CDN services?
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Using CDN like Cloudflare with mod_rewrite to save bandwidth
I know CDNs like Cloudflare save bandwidth by caching static files as images, JS, and CSS files.
I have a script that generates images on the fly and its location looks something like this:
http://...
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What amount of effort and money should one invest against DDoS threats? [closed]
Typically, when you invest money to protect yourself against some possible threat, you should take into account two factors:
the probability (p) of the problem actually happening
how much money (m) ...
- 3,935
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CDN for caching REST api
I am doing some research on CDN providers, however I have a hard time finding out which ones are available, what exactly they offer, and if they are appropriate for my purpose. Hopefully you guys can ...
- 2,239
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Does Amazon S3 have "sub-directories"? (Rackspace Cloudfiles does not)
In Rackspace, all the "buckets" are one level.
Buckets cannot be inside other buckets.
This makes it very hard for ORGANIZATION!
Edit: does anyone have any suggestions on which one to use...for best ...
- 8,521
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2
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CDN CNAMEs not resolving to customer origin
I have set up an Edgecast CDN to mirror all my static content. Because I use the root of my domain (donaldjenkins.com) to host my main site—using Google Analytics which sets cookies—I've stored the ...
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ISP Point of Presence versus ISP data center and what effect it has on CDN server deployment
I would like to clarify my understanding of the difference between an ISP Point of Presence and an ISP data center. Perhaps more importantly, I'm trying to understand at what kind of granularity each ...
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How do CDNs that don't require url rewriting work?
Will I have to change some DNS settings? If so, what would I have to change? Will they work automatically as long as I set the correct cache-control headers?
EDIT: I'm completely new to CDNs and ...
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CDN that supports custom SSL over custom domain [closed]
SSL is the biggest problem:
S3/Cloudfront doesnt support it.
Rackspace CloudFiles just told me they will support it in Q2 2011.
MaxCDN told me its $299 setup fee and a $299 monthly fee.
Based on ...
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Azure File Storage & CDN
I have a stage account with files. It is also configured as a share, and is mounted on a Linux server. This part works as expected.
URL to test file in Storage Accounts:
https://[CUT].file.core....
- 583
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performance × 12
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hosting × 10
static-content × 10
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