Amazon CloudFront CDN
-
Hi,
I'd like to increase website's speed with Amazon CloudFront CDN.
I created some CNAMEs and i've something like this:
- www.mydomain.com (my website)
- cdn1.mydomain.com
- cdn2..mydomain.com
- cdn3.mydomain.com
But i've a lot duplicate content now ! One per subdomain and one per content (gif, css, html, and so one).
Have you any feedback in order to not have SEO penalty ?
Does Google detects CDN ? Can I help him to understand my CDNs ?
Thanks,
Best regards,
Maxime
-
Hi Max,
As you know, SEOmoz uses a CDN (Content Delivery Network) to host our static content. This greatly improves the load time of our pages by distributing our content across a cloud network, and results in an improved experience for users.
If I understand your question correctly, you have set up a CDN and have created duplicate content issues.
To solve this, it's important to set up your CDN only to serve static content, like images, stylesheets and javascript. That is what a CDN is designed for. Do not duplicate your entire site - your HTML - as this will cause duplicate content issues.
If for some reason you need to replicate your entire HTML, then there are some steps you can take to mitigate the damage, although it's going to depend on your exact circumstances.
For example, you can set full URL canonical tags so that all your mapped CNAMES point to your primary URL.
To revert back to one copy of your HTML, you might want to put 301 redirects in place on the duplicated content (pointing to the original) before removing them from the CDN.
But even these aren't ideal solutions. It's best just to serve your static content, and only one version of your HTML.
-
I think he didn't reply.
He store data onto Amazon S3 and serves pictures from CDN (Amazon CloudFront). So he told me he hasn't duplicate content issues because he serves pictures.
But he tolds too "This isn't an issue for duplicate content, unlike if you were replicating your HTML".
When you use Amazon CloudFront without Amazon S3, but you use it with your webserver, Amazon CloudFront duplicates all content (pictures, pages, ...).
Onto your website, you'll only link pictures to CDN, for example http://cdn1.test.com/picture.jpg. But if GoogleBot opens http://cdn1.test.com/ it'll find all your html content !
So it'll be a duplicate issue I think, and I don't really know what is the best way to fix that (not use Amazon CloudFront without Amazon S3, Canonical, http headers, ...)
Thanks
-
Did the author's reply in the comment of the blog post answer your question, or do you still have this question?
-
Great post, but he didn't talk about duplicate content, only increasing speed.
-
Here's the YouMoz post that might help.
http://www.seomoz.org/ugc/improving-page-speed-with-amazon-web-services-a-beginners-guide
-
Tomorrow morning (Seattle time) I'll be posting a YouMoz blog post at http://www.seomoz.org/ugc that deals directly with setting up a CDN on Amazon. You can read through the steps given in the article and see if that answers your questions, and if not, you can ask a question in the comments.
Got a burning SEO question?
Subscribe to Moz Pro to gain full access to Q&A, answer questions, and ask your own.
Browse Questions
Explore more categories
-
Moz Tools
Chat with the community about the Moz tools.
-
SEO Tactics
Discuss the SEO process with fellow marketers
-
Community
Discuss industry events, jobs, and news!
-
Digital Marketing
Chat about tactics outside of SEO
-
Research & Trends
Dive into research and trends in the search industry.
-
Support
Connect on product support and feature requests.
Related Questions
-
Why is Amazon crawling my website? Is this hurting us?
Hi mozzers, I discovered that Amazon is crawling our site and exploring thousands of profile pages. In a single day it crawled 75k profile pages. Is this related to AWS? Is this something we should worry about or not? If so what could be a solution to counter this? Could this affect our Google Analytics organic traffic?
Intermediate & Advanced SEO | | Ty19860 -
If my website uses CDN does thousands of 301 redirect can harm the website performance?
Hi, If my website uses CDN does thousands of 301 redirect can harm the website performance? Thanks Roy
Intermediate & Advanced SEO | | kadut1 -
Will Amazon outrank our Online Store?
We're looking to add our products on Amazon to expend our reach of customers, but one question that I can't answer for sure is, will the Amazon product page outrank our online store's product page? I'm thinking that if we re-write the description and re-arrange the product name that we'll be fine but I'd like your guys’ opinion on this. Extra Info: Product that we're selling aren't listed on amazon, we're the only one selling these. So we might be shooting ourselves in the foot by trying to sell on Amazon since no one else is selling that product. Any feedback is greatly appreciated!
Intermediate & Advanced SEO | | FrankViolette0 -
We used to speak of too many links from same C block as bad, have CDN's like CloudFlare made that concept irrelevant?
Over lunch with our head of development, we were discussing the way CloudFlare and other CDN's help prevent DDOS attacks, etc. and I began to wonder about the IP address vs. the reverse proxy IP address. Before we would look to see commonalities in the IP as a way that search engines would modify the value to given links and most link software showed this. For ahrefs, I know they still show common IPs using the C block as the reference point. I began to get curious about what was the real IP when our head of dev said, that is the IP from CloudFlare... So, I ran a site in ahrefs and we got an older site we had developed years ago that showed up as follows: Actos-lawsuit.org 104.28.13.57 and again as 104.28.12.57 (duplicate C block is first three sets of numbers are the same and obviously, this has a .12 and a .13 so not duplicate.) Then we looked at our host to see what was the IP shown there: 104.239.226.120. So, this really begs a question of is C Block data or even IP address data still relevant with regard to links? What do the search engines see when they look for IP address now? Yes, I have an opinion, but would love to hear yours first!
Intermediate & Advanced SEO | | RobertFisher0 -
Ecommerce question - Should I use a CDN for my images. ?
Hi , We are currently in the process of re-developing out commerce website and I wondering should we use a CDN (content delivery nertwork) for our product images. My category pages are currently showing approx 21 product images per page and the page speed is okay but can be better but the page size is rather large ... anything between 600kb - 1 Meg. We do optimise the images already in photoshop. We also do things like minify etc to get the pages to load as fast as possible but I think the only thing left is using a CDN but I have heard mixed reports about using this.? We are also doing a mobile responsive version of the site to but I know that speed will be king with google and how it reflects on rankings. Whilst I can see a CDN will improve image page load speed etc, I guess there a negative SEO impact as well as images will be stored in the cloud ?.. as opposed on to on my site/database. Does anyone know how best to implement a CDN without impacting on SEO or know of any good SEO /implementation articles on this ?... Maybe do Ieave some images on my category pages so I can still do the alt image tags etc/ and have the remaining images on the CDN.? Many Thanks Sarah
Intermediate & Advanced SEO | | SarahCollins0 -
Advice on outranking Amazon and other big names in eCommerce
I have a client that is targeting some product related keywords. They are on page one for them but Amazon, OfficeMax and Staples are ranking in the top 3 spots for this specific product. Before I start targeting completely different words, do you have any advice on how to tackle big name eCommerce sites who are ranking higher than you. Thank you!
Intermediate & Advanced SEO | | TheOceanAgency0 -
How was cdn.seomoz.org configured?
The SEOmoz CDN appears to have a "pull zone" that is set to the root of the domain, such that any static file can be addressed from either subdomain: http://www.seomoz.org/q/moz_nav_assets/images/logo.png http://cdn.seomoz.org/q/moz_nav_assets/images/logo.png The risk of this configuration is that web pages (not just images/CSS/JS) also get cached and served by the CDN. I won't put the URL here for fear of Google indexing it, but if you replace the 'www' in the URL below with 'cdn', you'll see a cached copy of the original: http://www.seomoz.org/ugc/the-greatest-attribution-ever-graphed The worst-case scenario is that the homepage gets indexed. But this doesn't happen here: http://cdn.seomoz.org/ That URL issues a 301 redirect back to the canonical www subdomain. As it should. Here's my question: how was that done? Because maxcdn.com can't do it. If you set a "pull zone" to your entire domain, they'll cache your homepage and everything else. googlebot has a field day with that; it will reindex your entire site off the CDN. Maybe the SEOmoz CDN provider (CloudFront) allows specific URLs to be blocked? Or do you detect the CloudFront IPs and serve them a 301 (which they'd proxy out to anyone requesting cdn.seomoz.org)? One solution is to create a pull zone that points to a folder, like example.com/images... but this doesn't help a complex site that has cacheable content in multiple places (do you Wordpress users really store ALL your static content under /wp-content/ ?). Or, as suggested above, dynamically detect requests from the CDN's proxy servers, and give them a 301 for any HTML-page request. This gets complex quickly, and is both prone to breakage and very difficult to regression-test. Properly retrofitting a complex site to use a CDN, without creating a half-dozen new CDN subdomains, does not appear to be easy.
Intermediate & Advanced SEO | | mcglynn0 -
Effects on SEO with CDN
Should we be concerned about any adverse consequences to our site's SEO value when moving the site's assets (javascript files and css files) to a CDN (Akamai)?
Intermediate & Advanced SEO | | Volusion.com0