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CDNs are not created equal. Use Multi-CDN to Achieve Rock-Solid Performance in Any Geography

China, India, APAC, South America, Africa - Internet is ready to explode there and those users have a very different expectation from your service.

GlobalDots can ensure your content is optimised, reachable and delivered to end-users mobile (and desktop) devices in an instant.

 

FEATURES & BENEFITS

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WHY USE MULTI-CDN INSTEAD OF SINGLE CDN?

The use of real-time load balancing between multiple CDNs instead of one optimizes availability, latency and throughput, by monitoring and routing traffic to the best performing content source, moment by moment. If you are a leading enterprise today, you need to tune your site to deliver and perform equally from China to US to Asia Pacific, and in and out all the emerging markets in the world.

CDNs are here to cut the distance between you and end-user and your content delivery strategy should aim to the best. CDN nodes are deployed in multiple locations, but why do with only one array of the surrogate servers on the cloud. Providers of Content Delivery Networks vary in service. Some perform better in one part of the world, and some on the other. Some include one feature, but not the other. Yet, they are an irreplaceable tool in terms of a more secure network, reduced loading time of your page, manageable traffic and maximum availability. What if you could hop from one CDN provider to another, at all times? We help you redirect your user’s requests to the optimal content source based on your business needs.

INCREASE AVAILABILITY, LATENCY, THROUGHPUT, COSTS AND BUSINESS KPIs

We go after you in achieving your key business objectives and we are sensitive to what is important to you today, from both technical and commercial standpoints. We find solutions for you that are easy to adapt and update in relation to changing business and technology requirements for tomorrow.

Some of the problems you solve with our global, load-balancing platforms are: routing webpage requests to the lowest-latency CDN for a specific ISP/City, ensuring 100% content availability through active-active use of multiple CDNs, routing a video session request to the highest throughput CDN, and minimizing CDN bursting charges by checking bandwidth consumed month-to-date.
Direct advantages of using multi CDN are simple branching out to new regions and markets. You also need not be that cautious while adding rich multimedia to your website while using multi CDNs. You can keep your design both attractive and instantly available to all your customers. Due to a better performance, you will gain more revenue. An advantage of 250 milliseconds of a page load time is what will keep your customer from going to your competitor.

Plus, by using multiple CDNs there is basically a zero chance for your cloud to crash. This means no downtimes which could damage your company severely, by millions of dollars, depending of how big your online business is. You do not want to face an outage.

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Intelligent Caching and Purging of your content

We now have the ability to cache unpredictably changing content. With GlobalDots you can cache content that other CDNs consider un-cacheable.
 
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You can cache APIs which is made possible through features like dynamic site acceleration, instant purge and soft purge. Users can have instant access to your most up-to-date content and get all that they expect: responsiveness, rapid load times, continuous access to latest information. We can purge your content rapidly and intelligently, within 150 milliseconds or less. You also have more granular control over what you purge and when.
 
 
 

Who Uses Multi CDN

Netflix 4 CDNs
LinkedIn 3 CDNs
Twitter 3 CDNs
World Of Warcraft 3 CDNs
ESPN 2 CDNs
EDAY 2 CDNs
TMZ 1 CDN
Buy.com 1 CDN
 
Diversification is key to doing business today. Using multiple CDNs is smarter than using one CDN because CDN providers perform differently in different geographical regions, not all CDN providers are reliable as others and not all CDN providers include same features and strategies as others. You don’t need to switch CDN providers as this process is today automated.

Netflix, for example, uses 4 CDNs, Linkedin uses 3, Twitter uses 3, and EBay uses 2 CDNs. It is also very popular in gaming industry, where, for example, World of Warcraft uses 3 CDNs. It is important for e-commerce and everywhere that the content is growing, and whether that content comes in the form of an image, video, audio or other data file, it needs to be delivered to the customer as quickly as possible, across the globe, to all devices (tablets, desktop, mobile) and as more and more businesses are getting familiar with the technology, it’s getting more and more difficult to stay competitive.

You want to have as many PoPs (points of presence) around the globe to allow users to load sites as fast as possible. Multi CDN combines a range of CDN providers into one large global network and can guarantee a 100% service uptime.

CASE STUDY: ROSETTA STONE MULTI-CDN

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GlobalDots and Cedexis worked in unison to provide a powerful multi-CDN solution with ideal performance worldwide and a single rate for CDN services that met our budget.

I really didn’t expect this switch from 15 years with a single CDN over to Cedexis Openmix powering five ‘new’ CDNs to be so smooth!

Rosetta Stone
Vice President of Information Technology

Mark Moseley

DID YOU KNOW?

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MULTI-CDNs 

Eliminate Single Point of Failure

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WEB PERFORMANCE IS NOT JUST YOUR CDN

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When we look at web performance best practices, it all starts with a DNS and ends with delivery of your static and dynamic assets and execution of 3rd party code to render your site correctly on end-users browser, regardless if it's a mobile device or a desktop computer.

What makes us so unique is the fact that we optimize your full cloud delivery stack - from first mile to last mile - even on mobile devices.

If you look at speed improvements, you have to take all that into consideration - and that's where GlobalDots comes in - we analyze your current setup, run benchmark tests, prepare an architecture that best suits your needs, run Proof of Concept tests and at the end, deploy the setup that we closely monitor & optimize for best performance.

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WE ANALYZE YOUR CLOUD
DELIVERY STACK

Our team takes an in-depth look at your current CDN, DNS, front-end and mobile delivery solutions and gets a better overview where we can bring improvements.

We look at your website and your industry to get a better feeling which technologies might suit your better.

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RUN BENCHMARK
TESTS

After first step we run different tests (both synthetic and Real-User Monitoring (RUM)) to determine exact performance of your website (both desktop & mobile, including mobile apps).

We use industry-leading software to run our benchmark tests

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PREPARE
RECOMMENDATIONS

We use your benchmark tests to compare against our test database, find possible improvements and come up with a specific CDN, DNS and Mobile Delivery solutions that would fit your existing IT setup, budget and overall goals.

We provide you with unbiased, cost-effective quotes.

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ONGOING OPTIMIZATION
& SUPPORT

We provide 24/7/365 support and dedicated account managers. We closely monitor your stack and continuously look for improvements.

Your digital assets are safe with GlobalDots.

CONTENT DELIVERY. FROM FIRST MILE TO LAST MILE.

ANY DEVICE. ANY NETWORK CONDITION. ANY GEOGRAPHY

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FEATURES

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IMAGE OPTIMIZATION

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STATIC CACHING

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DYNAMIC CACHING

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SSL

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INSTANT PURGE

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DYNAMIC SITE ACCELERATION

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TCP ACCELERATION

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DEVICE DETECTION

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ACCELERATE ENCRYPTED CONTENT

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API ACCELERATION

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MANAGED SERVICE

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24 / 7 / 365 SUPPORT

CUSTOMERS THAT USE GlobalDots CDN SERVICES

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LEARN MORE

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HOW TO EVALUATE AND IMPLEMENT A
MULTI-CDN STRATEGY

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Running a global high-performance Web platform has never been more challenging. Everything you need to know about implementing a Multi-CDN strategy in one guide.

CDN
BUYER'S GUIDE

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Find out the most important tips & tricks before selecting your next Content Delivery Network (CDN) provider!

MULTI-CDN STRATEGIES FOR
VIDEO DELIVERY

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Mission critical elements are better improved by using a Multi-CDN or a Hybrid CDN approach as opposed to a Single CDN - learn why in our completely FREE Guide.

MULTI-CDN TECHNOLOGY FAQ

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How is Multi-CDN technically possible, that is what technologies are involved in achieving it?

When adopting a Multi-CDN Strategy, the choice is between managing it via Advanced DNS alone (plus n CDN Endpoints) or based on some intelligent HTTP Engine on top of the DNS Layer. Both approaches have their pros and cons but the need for Advanced DNS Management is obvious and pays itself even easily.



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How does this work in practice? I know most CDNs work via DNS CNAMEs, how do i CNAME to multiple CDNs

There are two main scenarios here: either you need Multiple CDNs, each catering to specific Geographies, and/or they are load balanced with each other everywhere. The CNAME Records in question will thus point to some load balanced intermediate Hostnames (instead of straight to your only CDN) in the back end, and these in turn will point to a specific (CDN) Hostname depending – among the “simplest” possible logics – on the End Users’ geographic location (first case above); whether you will see the intermediate load balanced Hostname when running a dig/nslookup command, depends on the Product/Technology and we cater for both scenarios.

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How do these load balanced Hostnames then know and take decisions based on logics such as the End Users’ geographic location? I want to load balance based on the End Users’ geography.

Advanced DNS Products are required to manage Multi-CDN Delivery Strategies; in general, they’re made up of three Components:

High Availability is achieved by rerouting traffic to other CDNs or Datacenters whenever an Outage is reported on the default CDN for a particular location.
Ratio Load Balancing (you can load balance assigning a “weight” or ratio to all involved outgoing Hostnames / CDNs.

Geolocation Load Balancing (for instance, the possibility of routing chinese End Users to a given Hostname, and rest of the World elsewhere as an example); in order to do this, these Products avail over accurate Geo Databases that map Clients IPs.

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What if I want to load balance every CDN in every Geography based on its relative performance?

Another, even more sophisticated approach to Multi-CDN is via DNS based on HTTP Intelligence. Intelligent HTTP Engines like these analyze Web Traffic Performance Key Metrics through their own crowd-sourced Platform’s benchmarks – or even metrics provided by the Customers – and offer Application Load Balancing by taking decisions based on these metrics.

This approach leads to even more efficient Load Balancing and higher Availability and ensures that every End User, in any geography, at any time, is always served the most performant CDN out of the available pool.

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Are there other load balancing logics I can avail on if I were to adopt a Multi CDN setup?

Of course there are, and we’ve seen a number of these over the years; these are to be seen as complementary and not as exclusive (you can factor in more than just one logic). Think about the following use cases:

  1. You have a specific commitment with a given CDN, so after you exceed it you want to serve traffic over another, probably more cost-effective one.
  2. Your traffic and Business mostly happens during a specific time frame, outside that timeframe you serve traffic over a less performant but more cost-effective CDN.
  3. You are a Streaming Customer, therefore you are not as much interested into low Response Times as you are into Throughput and faster Stream Startup Times.
  4. Your Origin Infrastructure is so good and performant that you don’t want to use a CDN in areas of proximity of your DataCenters, so you only serve traffic via CDNs into remote areas.


This is by no means an exhaustive list of scenarios, but rather more of a way to pick your mind around typical use cases we’ve come across over the years.