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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2answers
3k views

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 ...
3
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1answer
2k views

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 ...
2
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2answers
3k views

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 ...
11
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8answers
1k views

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 ...
2
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3answers
965 views

Does cloud storage replicate the data over many datacenters if so it means i benefit content delivery network?

Let's assume that i want to use cloud storage service from one of the cloud storage provider, i got X gb structured and unstructured data and i will use this data as my contents of my interactive web ...
0
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1answer
432 views

CDN Rerouting on 404 (file not yet in synch with original storage)

Here is the problem. I've setup my app(on EC2) to store uploaded images directly on Amazon S3. I'd like to be able to serve static files(cdn) from my 'home' server so I wrote script that does sync ...
1
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2answers
622 views

CDN server blocked in corporate networks

My CDN server is getting blocked on certain corporate networks. I have added my CDN site to most corporate firewall directory to make sure its categorized correctly and not as a parked domain or other ...
3
votes
2answers
796 views

how does CDN routing work

So I know how a CDN works in principal and how it works from a customer's perspective. My question is more about the root of how they work, the routing. My limited knowledge points to just some fancy ...
0
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1answer
212 views

Tornado - transferring a file to CDN

I have the nginx upload module handling site uploads, but still need to transfer files (3-20 MB each, let's say) to our CDN, and would rather not delegate that to a background job. what is the best ...
2
votes
1answer
114 views

Hosted file is downloaded damaged by IE

I have a ZIP file hosted via Apache with Akamai as CDN, the problem is when trying to download it with IE (and just IE) it is damaged and I'm unable to open it. Since the problem occurs in other ...
1
vote
5answers
195 views

Copyrighted Materials in Content Delivery Networks

We have a website idea that is related with some specific files. What we will do is to crawl all the web and fetch some specific files, and as you guess, host them in CDNs. Some of the files could be ...
4
votes
3answers
5k views

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.xxx.com ...
2
votes
3answers
617 views

Simplecdn alternatives for progressive streaming

I´m looking for a CDN to host my videos, but I need the ability to progressively stream from them (currently not available at simplecdn).
3
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4answers
2k views

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 ...
1
vote
7answers
2k views

Inexpensive CDN with Origin/Pull services? [closed]

Does anyone know of an inexpensive CDN which offers origin/pull services? I've looked into Cachefly, they look great but don't provide this service for less than $1k unfornuately. If you know of an ...
59
votes
11answers
16k 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 ...
13
votes
6answers
3k 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
vote
1answer
424 views

Serving http content files locally instead of off external servers

When building our web pages from different content sources, it may be necessary to get some images from external servers (e.g. when incorporating a rss feed), which may not be as fast or as well ...
2
votes
2answers
1k views

Recommend a content delivery network (CDN) for a specific purpose [closed]

could you please recommend a CDN for the following use: 1) Ability to update files on the edge servers automatically through API, so it should take no more than 5-10 minutes to make a new version of ...
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?
2
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1answer
492 views

How can you use gzip for static website content served by a Content Delivery Network? Does it improve page load times?

I'm serving up most of my static media from a CDN for my website. This includes images, videos, javascript files, and CSS files. YSlow and Google's Performance tool tell me that I should be gzip'ing ...
1
vote
2answers
209 views

Updateing files on Amazon’s CDN

is there any way to update files stored on Amazon's CDN service? Seems like it won't take any update of a file we make (eg. removing the file and storing the new one with the same file name as ...
1
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1answer
175 views

Media Server Stack [closed]

What would be, software wise, a good Stack to use for a media server, considering the Ubuntu OS (8.10 up)? This is supposed to serve large QuickTime video files (.mov) with > 100Mb in average. We ...