Leveraging the Global AWS Infra Flashcards
What is Amazon Route 53?
A managed DNS
What is a DNS?
A collection of rules and records which helps clients understand how to reach a server through URLs.
What is a simple routing policy?
Web browser goes into our DNS system, does a DNS query, and gets a record as a result.
What is a weighted routing policy?
Allows us to distribute traffic across multiple EC2 instances based on weights that we specify to each EC2. This is effectively load balancing.
We can use health checks.
What is a latency routing policy?
Policy that ensures that a user will talk to a server based on minimal latency.
Route53 ensures users talk to the server closest to them.
What is a failover routing policy?
DNS will check the servers and will route traffic based on health of servers.
What is AWS CloudFront?
CloudFront is a ContentDeliveryNetwork (CDN). Improves read performance, as content is cached at an edge location.
What is the difference between CloudFront and S3 Cross Region Replication?
Cloud Front uses the Global Edge Network
Files are cached for a daay
Great for Static content that must be available everywhere
Cross Region replication must be set up in each region you want replication to happen
Files are updated in near real time
Read Only
Great for dynamic content that needs to be available at low latency in a few regions
What is S3 Transfer Acceleration?
Increases transfer speed by transferring files to an AWS edge location which will forward the data to the S3 bucket in a target region.
Used only when you want to upload or download a file from an S3 bucket that is far away.
What is the AWS Global Accelerator?
Improves global application availability and performance using the AWS global network.
Leverages the AWS internal network to optimise route to your application.
What is the difference between Global Accelerator and CloudFront?
Cloud Front improves performance for cachable content such as images and video. Content is stored at the edge.
Global Accelerator does not cache, but makes your requests go faster by moving through the AWS network.
What is AWS Outpost?
Server racks that offers the same AWS infra, servers, APIs and tools to build your own applications on-premise just as in the cloud.
AWS sets up and manages outpost racks and you can start using AWS infra on premise.
Which Route 53 Routing Policies would you use to route traffic to multiple resources in proportions that you specify?
Weighted Routing Policy
You need to enable fast, easy, and secure transfers of files over long distances on S3. Which service would you use?S
S3 Transfer Acceleration
What does AWS CloudFront use to improve read performance?
Caching content in edge locations
