Hi guys.
Welcome to another exam cram and what we're going to do is just cover off the key facts from this section.
So for Amazon Route 53
we learned that Route 53 is the AWS domain name service.
It's a global service and it performs three main functions: domain registration for registering domain
names,
the DNS service for translating names to IP addresses and various other record types that you might
use on DNS.
And then it's got health checking as well which sends automated requests to applications to verify that
they're reachable available and functional.
It can also do some more advanced stuff like DNS failover it integrates with lots of different AWS services
including ELB, S3 and CloudFront, and they can be endpoints. Routing policies determine how Route 53
DNS responds to queries. CloudFront is the content delivery network.
So remember Route 53 is more about DNS, CloudFront is about caching data closer to users.
So typically this is going to be media files but it can be other types of files as well so pretty much
any file type can be cached with CloudFront and there are edge locations around the world so that's
about getting your content and your data closer to your users for better performance.
So remember that.
And also remember that you can also have protection against distributed denial of service attacks with
CloudFront.
So CloudFront can be used for data, videos, applications, and APIs. Key benefits are caching edge locations
for fast distribution to customers. You will find CloudFront questions on the exam, I guarantee it, and
they are going to ask you questions about what's the best way to get content closer to users for better
performance.
So remember CloudFront.
You should also remember that it is a service which can give you protection from distributed denial
of service, it integrates with several services.
Remember there's origins and distributions.
Now this is probably going too far for the cloud practitioner exam.
It's more about just understanding how CloudFront works for your understanding but an origin is where
the files come from that the CDN then distributes and that can be an S3y bucket an EC2 instance
or an elastic load balancer.
It can even be external.
You need a distribution to be able to distribute content and the two different types are web and RTMP.
You'll definitely want to remember that CloudFront is part of the AWS global infrastructure and it
uses edge locations and regional edge caches.
The Edge location is where content is cached.
This is different to your AWS regions and availability zones. Requests are automatically routed to the
nearest edge location so the location that is nearest to your customers or your users or regional edge
location.
Excuse me.
A regional edge cache is located between the origin of the data and the location and they have a larger
cache and the point of those is to get more content closer to users.