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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12
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6answers
2k views

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
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0answers
34 views

How to use an origin-pull CDN with external CNAMEs?

I have a particular issue that I'm struggling with regarding setting up a CDN. To describe our situation: We are running an ASP.NET based CMS(DotNetNuke), configured with two different web heads on ...
-1
votes
0answers
28 views

How to cache and rebroadcast livestream HLS (m3u8) on Ubuntu server? [closed]

Overall question Is there any server application on Ubuntu that allows us to cache and rebroadcast livestream? (HLS - m3u8 in particular) More details There are some livestreams outside of my ...
2
votes
2answers
351 views

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 ...
-1
votes
2answers
1k views

Adding expire headers to content served from CDN?

I'm using MaxCDN to serve content to my blog using W3 Total Cache. The problem I'm running into when evaluating my site using Google Page Speed and YSlow! is that expire headers are not being sent on ...
0
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1answer
23 views

Problems accessing my servers - but only from German providers

I'm having a problem that I've been trying to resolve for months to no avail. I have several websites hosted on a dedicated server in the US. Those include http://noduslabs.com ...
0
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1answer
177 views

Slow Website Access from China

I just made a wordpress based website for a client that operates in China. The website is being cached completely by W3 Total Cache and served very fast in Europe (where our main server is located). ...
0
votes
1answer
45 views

CDN and TTL on local EC2 files

I Have a file in CDN and I need a local copy of it in all of my EC2 instances. I like to set a TTL on the local copy of 5 minute, and have one of the following: Have it Fetch automatically as soon ...
0
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0answers
33 views

Cloudfront - How to invalidate objects in a distribution that was transformed from secured to public?

The setting I have an Amazon Cloudfront distribution that was originally set as secured. Objects in this distribution required a URL signing. For example, a valid URL used to be of the following ...
3
votes
5answers
2k views

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 ...
51
votes
11answers
14k views

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 ...
4
votes
1answer
256 views

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 ...
0
votes
1answer
54 views

Redirect to a CDN

I will like to distribute a javascript file with several of my clients, they have several thousands of unique visits a day on their pages, so my file will be called a lot of times, i don't want that ...
1
vote
1answer
34 views

Running a database heavy webapp in the UK and Aus server setup

I am running a webapp from a uk datacenter. Speed is fine as expected. The webapp relies heavily on a database. I would like to open the webapp to Australia and New Zealand but maintain good response ...
0
votes
0answers
198 views

Azure CDN '502 - Bad gateway' over HTTPS

I have Azure CDN targeting to a cloud service and it has worked for months but from last weekend it fails with '502 - Bad gateway' on HTTPS. If I request source directly (using cloud service name) ...
0
votes
3answers
319 views

How to block CloudFront or other CDN to access my website

Some guys create a CloudFront CDN to proxy my site, so people can access my website using url like df03039lsls933.cloudfront.net instead of www.example.com How to block this using nginx? From ...
0
votes
1answer
31 views

Do I need CDN if I am target to small region?

I have website which is targeting to small geografical area, the bigest CDN companies don't even have CDN servers close to this area. I am wondering will I get any benefit to use CDN, becouse main ...
8
votes
4answers
33k views

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
votes
1answer
792 views

Google Cloud Storage vs Amazone S3 + Cloudfront? [closed]

So I am building a web service which is going to be hosting files up to 500mb in size, and am finished with the coding and now deciding on hosting. I see that Amazon Web Services is very popular, but ...
8
votes
2answers
10k views

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?
3
votes
1answer
223 views

How to do 'naked domain aliasing' like DNS hosts that support it?

My goal is to use GitHub Pages and also benefit from their CDN, without having to use a third-party DNS host that supports DNS ALIAS record types (or ANAME - neither are accepted standards). I want to ...
3
votes
1answer
1k views

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 ...
1
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1answer
107 views

Amazon CloudFront Synchronization

I want to leverage Amazon CloudFront to "cache" my webserver such that my website stays up even if my webserver goes down. I understand CloudFront has many edge servers that facilitate the ...
0
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1answer
51 views

AWS: In what situations would you NOT want to put your entire domain in front of a CloudFront distribution?

Given the relatively recent support for POST/PUT/etc. (http://aws.amazon.com/about-aws/whats-new/2013/10/15/amazon-cloudfront-now-supports-put-post-and-other-http-methods/), if you don’t require any ...
2
votes
0answers
154 views

Is it possible to configure a CDN so that it will step out of the way for a subset of regional IPs?

We have a website which targets customers in China, both expat and local Chinese. We have an ICP license which allows us to host in a datacenter inside China. Internet in China is actually as fast as ...
1
vote
1answer
429 views

Whole-site delivery on CloudFront

After much searching, I can't seem to find the question to whether it's viable to cache my entire website in Cloudfront. (Static assets as well as the HTML returned on a dynamic request). The Setup ...
1
vote
0answers
329 views

High latency on domain with CDN

High latency on domain with CDN I have problems with latency on my server, these are the tests I made with blitz.io Latency album http://imgur.com/a/bCmwo I would uploaded images here but it ...
2
votes
3answers
198 views

How to host a Wordpress site on multiple servers due to geographical siteload issues?

Wordpress website is currently hosted in the US, this is where 40% of our target audience is. The rest of visitors are coming form Middle east, Australia, Russia, China, Singapore, UK, Switzerland, ...
1
vote
1answer
164 views

Reverse HTTP proxy as CDN origin server, how to handle last modified since?

I'm trying to set up redundant origin servers for a CDN that will deliver on demand video files. The current setup is that I have two "media" servers that have a large storage capacity and are running ...
0
votes
2answers
177 views

How long does azure cdn live before updating

I am using the windows Azure CDN, And not like Amazon's one cannot configure any TTL regarding the files, I was wondering if there is any official document microsoft had regarding to the ...
0
votes
1answer
75 views

CloudFlare dashboards empty, or performance issues

I wanted to test CloudFlare performance so I set my image gallery domain on it and started testing. I have added PageRules for caching. And chose the Security: Essentially Off. I checked NS check ...
0
votes
1answer
1k views

Nginx Rewrite - How to redirect url for certain file type?

My current bargain CDN has very poor performance on video caching. What's worse, I don't have any access to its setting. So I am wondering is it possible to rewrite the url for certain file type to ...
0
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2answers
66 views

Backup files served on a cdn

I am thinking about using a CDN to serve my static files, rackspace cloud files to be exact. I am wondering is it normal to backup these files? Is there even a way to back them up?
1
vote
1answer
533 views

Configuring htaccess file for self hosted CDN

I am trying to set up a self hosted cdn for my site, but I am having problems with the rules in the htaccess file and I can't get it to work. At the moment the ftp server that will act as CDN has the ...
3
votes
2answers
249 views

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) ...
0
votes
3answers
955 views

Serving images from another hostname vs Apache overload for the rewrites

We are trying to improve further the speed of some sites with older HTML in order as well to obtain better SEO results. We have now applied some minify measures, combined html, css etc. We use a small ...
5
votes
3answers
3k views

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 ...
0
votes
1answer
217 views

Chrome not caching CloudFront video/audio; CloudFront delivers http 1.0 headers

With the following response header: HTTP/1.0 200 OK Content-Type: video/mp4 Content-Length: 3294545 Connection: keep-alive Date: Thu, 30 May 2013 21:17:34 GMT x-amz-meta-s3cmd-attrs: ...
0
votes
2answers
75 views

Does offloading files to faster servers ruin site performance? [closed]

With a decent server and HTML on it, will offloading the CSS/JS/Images to another, faster server ruin the performance? I was thinking about sending, say www.domain.net => main, decent server ...
2
votes
1answer
1k views

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 ...
0
votes
2answers
346 views

HTTPS CNAME setup for CDN

Background I need to host some files on our CDN (edgecast) which will be available over HTTPS. I would usually accomplish this by using the provided CDN url, i.e. https://wav22.233d.edgecast.com/.... ...
0
votes
1answer
211 views

Check whether CDN is working or not

Is there any way to find whether the static content is being served by CDN or not. Using curl, can i find whether the static file is being served by CDN or by the webserver.
0
votes
0answers
251 views

Nginx - Getting high request time for some static files

We recently moved to Nginx for serving static images for our website. The entry level server is easily able to handle the load with load avg mostly around 0 and low cpu usage. But when we logged ...
0
votes
2answers
78 views

How to return no answer with nginx?

I use nginx with Incapsula CDN and need to cleanly block all another requests in nginx's server {} context (for certain domain names, but not for all nginx's connections). Best practice in my opinion ...
1
vote
1answer
84 views

using a CDN on the same location as server

One of the purpose of a CDN is to distribute your static assets in an area closest to your user. So say my server is at location X and most of my users will be at Y. However the closest CDN server to ...
1
vote
3answers
282 views

Why Not Serve an Entire Site from a CDN? [closed]

Normally when I hear about CDNs and how great they are, they're usually talking about serving a site's static content, like images, CSS, JS, and video. But if CDNs are so great, why don't we run ...
0
votes
2answers
365 views

Wordpress feed does not update after APC and Cloudflare

I am running a Wordpress site on a Ubuntu server. I installed APC and setup Cloudflare. After that I started having a strange problem with the feed. When I check the feed on the browser, I can see ...
1
vote
1answer
53 views

CDNs - is there a delay between file submission and availability?

I've never subscribed to a CDN before, and was hoping someone could share their experience. My question is: Is there a significant delay between a file being submitted via a CDN (via API), and it's ...
3
votes
3answers
594 views

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.
2
votes
1answer
73 views

static big files and a way to serve them securely (central authentication CDN)

I need to serve few static big files(about 4GB each) to several users, using 5 servers that are in different geographical regions. The idea is that nobody else gets the content as there's ...