carcop jameah darisa
Ashlie Mealey
I pulled this chapter together from dozens of sources that were at times somewhat contradictory. Facts on the ground change over time and depend who is telling the story and what audience they're addressing. I tried to create as coherent a narrative as I could. If there are any errors I'd be more than happy to fix them. Keep in mind this article is not a technical deep dive. It's a big picture type article. For example, I don't mention the word microservice even once :-)
Given our discussion in the What is Cloud Computing? chapter, you might expect Netflix to serve video using AWS. Press play in a Netflix application and video stored in S3 would be streamed from S3, over the internet, directly to your device.
Another relevant factoid is Netflix is subscription based. Members pay Netflix monthly and can cancel at any time. When you press play to chill on Netflix, it had better work. Unhappy members unsubscribe.
The client is the user interface on any device used to browse and play Netflix videos. It could be an app on your iPhone, a website on your desktop computer, or even an app on your Smart TV. Netflix controls each and every client for each and every device.
Everything that happens before you hit play happens in the backend, which runs in AWS. That includes things like preparing all new incoming video and handling requests from all apps, websites, TVs, and other devices.
In 2007 Netflix introduced their streaming video-on-demand service that allowed subscribers to stream television series and films via the Netflix website on personal computers, or the Netflix software on a variety of supported platforms, including smartphones and tablets, digital media players, video game consoles, and smart TVs.
Netflix succeeded. Netflix certainly executed well, but they were late to the game, and that helped them. By 2007 the internet was fast enough and cheap enough to support streaming video services. That was never the case before. The addition of fast, low-cost mobile bandwidth and the introduction of powerful mobile devices like smart phones and tablets, has made it easier and cheaper for anyone to stream video at any time from anywhere. Timing is everything.
Building out a datacenter is a lot of work. Ordering equipment takes a long time. Installing and getting all the equipment working takes a long time. And as soon they got everything working they would run out of capacity, and the whole process had to start over again.
The long lead times for equipment forced Netflix to adopt what is known as a vertical scaling strategy. Netflix made big programs that ran on big computers. This approach is called building a monolith. One program did everything.
What Netflix was good at was delivering video to their members. Netflix would rather concentrate on getting better at delivering video rather than getting better at building datacenters. Building datacenters was not a competitive advantage for Netflix, delivering video is.
It took more than eight years for Netflix to complete the process of moving from their own datacenters to AWS. During that period Netflix grew its number of streaming customers eightfold. Netflix now runs on several hundred thousand EC2 instances.
The advantage of having three regions is that any one region can fail, and the other regions will step in handle all the members in the failed region. When a region fails, Netflix calls this evacuating a region.
The header image is meant to intrigue you, to draw you into selecting a video. The idea is the more compelling the header image, the more likely you are to watch a video. And the more videos you watch, the less likely you are to unsubscribe from Netflix.
The first thing Netflix does is spend a lot of time validating the video. It looks for digital artifacts, color changes, or missing frames that may have been caused by previous transcoding attempts or data transmission problems.
A pipeline is simply a series of steps data is put through to make it ready for use, much like an assembly line in a factory. More than 70 different pieces of software have a hand in creating every video.
The idea behind a CDN is simple: put video as close as possible to users by spreading computers throughout the world. When a user wants to watch a video, find the nearest computer with the video on it and stream to the device from there.
In 2007, when Netflix debuted its new streaming service, it had 36 million members in 50 countries, watching more than a billion hours of video each month, streaming multiple terabits of content per second.
At the same time, Netflix was also devoting a lot of effort into all the AWS services we talked about earlier. Netflix calls the services in AWS its control plane. Control plane is a telecommunications term identifying the part of the system that controls everything else. In your body, your brain is the control plane; it controls everything else.
In 2011, Netflix realized at its scale it needed a dedicated CDN solution to maximize network efficiency. Video distribution is a core competency for Netflix and could be a huge competitive advantage.
The number of OCAs on a site depends on how reliable Netflix wants the site to be, the amount of Netflix traffic (bandwidth) that is delivered from that site, and the percentage of traffic a site allows to be streamed.
Within a location, a popular video like House of Cards is copied to many different OCAs. The more popular a video, the more servers it will be copied to. Why? If there was only one copy of a very popular video, streaming the video to members would overwhelm the server. As they say, many hands make light work.
Right now, up to 100% of Netflix content is being served from within ISP networks. This reduces costs by relieving internet congestion for ISPs. At the same time, Netflix members experience a high-quality viewing experience. And network performance improves for everyone.
What may not be immediately obvious is that the OCAs are independent of each other. OCAs act as self-sufficient video-serving archipelagos. Members streaming from one OCA are not affected when other OCAs fail.
Hi guys. The Microsoft Edge is my favorite browser of all times, really, but not when I try to watch netflix or other video streaming services, it always breaks, I have no ideia what to do anymore. Always when I try to play something there's an error and then I need to reload over and over again, sometimes even when I just play the video it stop working when I try to play again. Help me to keep using this best browser that I've ever seen.
I've ever tried to disable hardware acceleration, enable DRM content, install Microsoft Silverlight and a lot of other things, but I didn't get to watch so far without an error I keep receiving these error codes: D7356-7701 and others related. Is there's still something that can be done to really fix theses erros or I just have to be patient and wait for news versions of the browser?
How can I sign up for an Xfinity package with Netflix?
Xfinity packages with Netflix are only available in select markets at this time. To check availability, please visit xfinity.com.
How do I know if my Xfinity package includes Netflix?
If Netflix is included in your X1 package, it will be listed in the \"Bundled Services\" or the \"Regular monthly charges\" section of your bill.
I signed up for an Xfinity package that includes Netflix. How do I activate my Netflix account?
Launch the Netflix app on your X1 TV Box. Then, follow the prompts to either link your existing Netflix account to your Xfinity package or create a new Netflix account to be linked to your Xfinity package.
How do I find the Netflix app on my X1 TV Box?
You can either say \"Netflix\" into the Xfinity Voice Remote or you can go directly to the Netflix app by clicking on the Netflix tile found in the X1 apps menu.
I signed up for an Xfinity package that includes Netflix but never accessed the Netflix app on my X1 TV Box. Can I still create a new Netflix account or transfer an existing one as part of my package?
Yes. However, you must open the Netflix app on your X1 TV Box to activate the Netflix service included in your Xfinity package.
If you have an existing Netflix account and sign up for an Xfinity package with Netflix service, you'll continue to be charged separately for your Netflix account until you complete the activation process by using the Netflix app on your X1 TV Box.
How do I change my Netflix plan or account information?
You can change your Netflix plan at any time by signing in to netflix.com and visiting the Account page, then selecting Change Plan to view and select available plans.
What will happen to my Netflix account if I cancel my Xfinity service or change my Xfinity package?
For more information, see how to disconnect or downgrade Xfinity service with Netflix.
What happens to my Netflix account if I move?
Your Netflix subscription relationship is with Netflix directly, even if you signed up through Xfinity X1. Because of this, a move will not impact your subscription unless you are billed by Comcast, in which case, you will need to update your method of payment for Netflix.
Note: You'll need to sign in to Netflix again once you activate the boxes at your new address. If you move and no longer have Xfinity services, you will no longer be billed by Comcast and must update your payment method for Netflix or risk losing your Netflix Service.
If you have a previous, valid method of payment (credit or debit card, for example) on file with Netflix, Netflix will charge your previous method of payment. Contact Netflix to cancel your Netflix account after changing your service package with Comcast.
I accidentally linked the wrong Netflix account to my Xfinity package. What should I do?
If you accidentally connect the wrong Netflix account to your Xfinity package, please sign out of the Netflix app on X1 and please contact us.