AWS > Networking & Content Delivery > Amazon Route 53:
Amazon Route 53 is a highly available and scalable cloud Domain Name System (DNS) web service.
In AWS, the most common records are:
A: URL to IPv4
AAAA: URL to IPv6
CNAME: URL to URL
Alias: URL to AWS resource
Routing policies:1. Simple Routing:
If you choose the simple routing policy, you can only have one record with multiple IP address.
If you specify multiple values in a record, Route 53 returns all values to user in a random order.
2. Weighted Routing:
Allows you split your traffic based on different weights assigned.
3. Latency-based Routing:
Allow you to route your traffic based on the lowest network latency for you end user.
4. Failover Routing:
Failover routeing polices are used when you want to create an active/passive set up.
5. Geolocation Routing:
Geolocation routing let you choose where your traffic will be sent based on the geographic location of your users.
6. Geoproximity Routing (Traffic Flow Only):
Geoproximity routing lets Amazon Route 53 route traffic to your resources based on the geographic location of your users and your resources. You can also optionally choose to route more traffic or less to a given resource by specifyin a value, known as a bias.
A bias expands or shrinks the size of the geographic region from which traffic is routed to a resource.
To use geoproximity routing, you must use Route 53 traffic flow.
7. Multivalue Answer Routing:
Multivalue answer routing let you configure Amazon Route 53 to return multiple values, such as IP addresses for your web server, in response to DNS queries.
You can specific multiple values for almost any record, but multivalue answer routing also lets you check the health of each resource, so Route 53 returns only values for healthy resources.
This is similar to simple routing however it allows you to put health checks on each record set.
Reference:
1. AWS Documentation - Amazon Route 53 Concepts
https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/route-53-concepts.html
2. Udemy - AWS Solutions Architect - Associate:
https://www.udemy.com/aws-certified-solutions-architect-associate/
最初發表 / 最後更新: 2020.02.14 / 2020.06.09
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