CDN works
CDN works is your source station resources cached on CDN nodes located throughout the country, when the user requests a resource, the nearest return the cached on the node resources without requiring each user's requests back to your source station acquisition, avoid network congestion, share the source station pressure, speed and experience to ensure user access to resources.
"CDN speed up access to websites" Video Course: http://click.aliyun.com/m/36977/
Ali cloud CDN Description: http://click.aliyun.com/m/27844/
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Why use CDN?
If you run a website, then you should know that several factors are key to your winning:
Attractive content
access speed
to support frequent user interaction
can browse accessible throughout
In addition, your site must be able to run in a complex network environment, taking into account the global user access experience. With the use of your website will be more and more objects (such as images, frames, CSS and APIs) and all kinds of action (share, track) and the system gradually huge. So, bring the system slows down the loss of users.
Research on Google and other sites indicate that a slow website every one second, you will lose a lot of visitors, these visitors never even visited the site again. You can imagine, if your site is profitable or brand channel window, then the site is slow will be a fatal blow.
This is what you use CDN of the first and most important reason: In order to speed up access to websites
In addition, CDN and some action:
1. In order to achieve cross-operator, cross-regional network covering the whole
Internet is not interoperability, regional ISP geographical limitations, limited export bandwidth and other factors have caused regional site inaccessible. CDN to accelerate the global coverage of the line, and by operators, IDC deployment of resources in the national backbone provider node, CDN edge reasonable deployment of distributed storage nodes, make full use of bandwidth resources, balanced source of outbound traffic. Ali cloud 500+ nodes in the country, overseas 300+ nodes, covering the major countries and regions is not a problem, it can ensure stable and fast CDN services.
2. In order to protect your website security
CDN load balancing and distributed storage technology that can enhance the reliability of the site, not quite to your website virtually add an umbrella to deal with the vast majority of Internet attacks. Anti-hacking system can avoid malicious site attacks.
3. For remote replication
When a server unexpected failure, the system will call the other server nodes nearby health services, thus providing close to 100% reliability, which make your website can do and never goes down.
4. In order to save cost input
CDN acceleration can be achieved using the country laying the site, according to you regardless of the synchronous mirroring between the purchase and the subsequent hosting server operation and maintenance, server, management did not have to worry about maintenance technicians, saving manpower, energy and financial resources.
5. In order to let you concentrate more on the business itself
CDN acceleration manufacturers usually provide one-stop services, business is not limited to CDN, as well as supporting cloud storage, big data services, video services, cloud, and generally provide 7x24 monitoring operation and maintenance support to ensure the smooth flow of the network at any time, you can rest assured use. And put more energy into the development on their core business.
CDN http request using the post-processing flow
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About Ali cloud CDN
Ali cloud has a 1000+ node domestic, 200 overseas + node, 80T bandwidth capacity reserves. Overseas node coverage on six continents in more than 30 countries and regions, domestic node complete coverage of the 34 provincial regions. Large number of nodes located in the capital and other cities, backbone network access, full Gigabit network card; and a single-node storage capacity (40TB - 1.5PB), the bandwidth load large (40-200Gbps), may well respond to emergency situations.
CDN Tutorial: http://click.aliyun.com/m/36977/
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