What is CDN (Content Delivery Network)?

You can access website and download file or content. The process may take longer time because you are in different continent with website server. To overcome this situation, the website creates network consists of nodes and servers in different countries. When users want to download file or stream multimedia content, the nearest server will response and send what they want. Distributed network for content delivery becomes more efficient using this technology. That’s what you call as Content Delivery Network.

Exploring more about CDN

CDN is not new technology in internet era. Since its inception, downloading and uploading file becomes usual activity. As users, you send request and command to server to get the content. As response, web hosting gives content such as webpage containing document, files, picture, and photo, even audio. It uses http and ftp server to handle such delivery network. Speed and bandwidth depend on the server capability and ISP. If you have fast internet access, there is no problem for having huge file.

Another method is peer-to-peer. Instead of download from server, you get the file directly from computer that other users have. For example, you want certain document and your friend uses peer-to-peer network to send the file directly to your computer. It is also part of early model for CDN. One issue in this technology is security and capacity. Your computer is at high risk because it exposed directly to internet without firewall. It might be virus, Trojan, spam, or other malicious software that attack your network. Furthermore, peer-to-peer also relies on network bandwidth where the speed is limited.

The internet users grow significantly, and the speed becomes important. You need high quality content and top network to deliver data. Moreover, many entertainment companies move to internet and digital technology to serve their customers. For example, a music company uses digital download to sell albums and single. Besides, music streaming becomes common service for smartphone users. They do not need to download, but can still access the favorite song easily. All of them are benefits of CDN that can send files to stream quickly.

How does CDN work? From brief introduction above, you have the basic idea about CDN. In general, there are three parties that involve in this technology. They are content provider, CDN operator, and users or clients. When accessing internet from the device, you are the user. The content provider is company, person, people, organization, or institution that produces digital content. CDN operator is the key player in this network. They handle all hardware, maintenance and network, but not internet access.

CDN prepares network to distribute contents. Each server has similar contents located in various countries. When particular country has huge internet users, CDN operators put more servers to handle traffic. With this network, users will get the same content quickly because it connects to nearby server.

CDN is useful to control restriction. Each country has varied regulation related to content theme. With CDN, users from non-restriction countries do not have to worry about such thing because the content is not from abroad. One big advantage is capacity as CDN is suitable for delivering vast content from big companies in entertainment industry.

What is VDS (Virtual Dedicated Server?

In fact, server consists of several types, such as VPS, cloud computing, dedicated server, and shared hosting. This time, let’s talk about Virtual Dedicated Server. You may know about VOS and dedicated server, but VDS consists of words from both. The next section will give a brief definition and benefits of VDS.

More about Virtual Dedicated Server

VDS uses virtualization technology to make closed environment. When putting website on internet, you need hosting that’s available in shared server. You may do not have your own computer as server but rent server to handle hosting. VPS or virtual private server does the same thing as shared server, but the environment is closed and limited. A single hardware consists of several VPS as separated computer, but it cannot interfere each other. When one VPS is down, the others are still working because they have different specs and system.

What is dedicated server? It is different from VPS as you have computer at home or certain place dedicated for server. Instead of renting virtual server from third party, you can purchase and install server system on computer. The function is similar to virtual server, except you can see the hardware directly on your eyes. Dedicated server is suitable for big company and organization with high security and flexibility.

Now, you move dedicated server at home to put into virtual place. You will get what is called as VDS. Basically, it looks quite similar to VPS since it adopts virtual system to separate hardware and provides specific specs. However, VDS is bigger in capacity and bandwidth. VPS consists of managed and unmanaged where you choose based on your knowledge and skill in this area. On contrary, VDS is unmanaged as clients have sole responsibility to install, manage, and maintenance on their own.

In simple term, VDS is dedicated server that available in virtual hardware with private access. Well, what you do is renting virtual server. It has big memory and capacity with new processor. VDS is faster with better hardware to handle huge traffic.

Due to virtual technology, it is safer and more secure than the dedicated one. One benefit when having dedicated server is you know its location and how to protect. However, there is still possibility for abruption traffic that only expert or professional can do. Unless your company does not have specialist, dedicated server is out of option. To overcome this situation, VDS does not need specialist since provider will act super-user that manages all hardware. You only focus on the core business to optimize VDS.

One issue is hardware upgrade that takes cost and time to proceed. When you have computer, buying new one is good way to get better hardware. However, the data and files are needed to put into new location. Furthermore, VDS only has specific specs from beginning. It is still flexible in term of bandwidth, software, application, and user control. It might not be as flexible as cloud computing, but still reliable when your need vast data processing and huge bandwidth.