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Once the internet came along and Netflix with it blockbuster stores became all but a memory. As there are now only a dozen of them left in the United States. You’d think that it would take a rather massive enterprise to pull the rug out from under literally thousands of brick-and-mortar stores. During periods of peak usage Netflix accounts for over a third of all downstream Internet traffic in the United States a third. How do they sling videos to so many people at once do they just have one giant server farm that constantly pours episodes of house of cards and Family Guy onto the Internet backbone. Like many other large sites focused on media delivery. So, main question is How Does Netflix Work? for that please read below:
How Does Netflix Work?
Netflix uses a content delivery network or CDN which store and transmit movies and TV shows. You see although Netflix’s entire library could certainly fit on a few servers housed in a single building. There are some problems with this approach.
1. locations far from that facility would suffer from high latency.
2. This architecture would be basically the definition of a bottleneck. Since a single connection that fast doesn’t exist if it did it would be astronomically expensive.
3. It would need a single point of failure that could cause Netflix entire service to go down.
Netflix in particular takes this concept a step further because they are so big they actually work directly with a number of ISPs to install their own hardware. These boxes called open connect appliances at either exchange points or even within the ISPs facilities themselves. Holding up to 280 terabytes of video each, these come preloaded with close to the entire Netflix library. So, what this means for you the consumer is that instead of connecting to some super far away land server to watch a movie. You’re connecting to an appliance at your own ISP that’s much closer cutting down on latency and making it. So that you’re Netflix data packets don’t have to fight with all the other internet traffic that is upstream from your ISP. When it’s time for catalog updates Netflix pushes them to these appliances during the morning when there’s typically less Internet traffic overall. If lots of people fire up their computers at once the appliances are equipped to push out data at over 90 gigabits per second. The equivalent of over 13,000 people watching an HD movie at once. To keep speeds high the open boxes only handle storing and transmitting video. Netflix uses Amazon Web Services or AWS a massive cloud processing service that Netflix can quickly buy more time on in the form of visualized servers as their customer base and traffic volume grows. It’s also very failure tolerant due to high amounts of redundancy.
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