Route53 - Concepts -Part2

Amazon Cloud Concepts Learning --> Day9

Supported DNS Record Types

Types of DNS records that are supported by Route53

• A (address record)

• AAAA (IPv6 address record)

• CNAME (canonical name record)

• CAA (certification authority authorization)

• MX (mail exchange record)

• NAPTR (name authority pointer record)

• NS (name server record)

• PTR (pointer record)

• SOA (start of authority record)

• SPF (sender policy framework)

• SRV (service locator)

• TXT (text record)

• Alias (an Amazon Route 53-specific virtual record)

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Route53 Hosted Zones

A hosted zone serves as a container for records, which hold details on the traffic routing you wish to use for a particular domain, such api.com, and any of its subdomains (test.api.com, dev.api.com). There are two types of hosting zones

• Public Hosted Zone contain records that specify how you want to route traffic on the internet.

• Private Hosted Zone contain records that specify how you want to route traffic in an Amazon VPC.

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Routing Policies

You select a routing policy when creating a record, and this policy dictates how Amazon Route 53 handles queries:

• Simple Routing Policy

  Use for a single resource that serves a specific purpose for your domain, such as a web server that is responsible for serving content for the example.com website. To generate records in a private hosted zone, utilize basic routing.

• Failover Routing Policy

  When configuring active-passive failover, use this method. Records in a private hosted zone can be created using failover routing.

• Geolocation Routing Policy

  Use in situations when you wish to redirect traffic according to user location. In a private hosted zone, records can be created using geolocation routing.

• Geoproximity Routing Policy

  Use to route traffic based on where your resources are located and, if desired, to move traffic from one location's resources to another. To create records in a private hosted zone, utilize Geoproximity routing.

• Latency Routing Policy

  Use to route traffic to the AWS Region with the best latency when you have resources spread across several regions. In a private hosted zone, records can be created using latency routing.

• IP-Based Routing Policy

  Use this when you wish to route traffic depending on user location and know the IP addresses from which the traffic is coming.

• Multivalue answer Routing Policy

  Use this if you want Route 53 to randomly choose up to eight healthy records in response to DNS requests. In a private hosted zone, records can be created using multivalue answer routing.

• Weighted Routing Policy

  Use to direct traffic to various resources in the ratios you want. In a private hosted zone, records can be created using weighted routing.

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Route53 Limitations

(*)- These Quota can be increased

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Additional References

https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/ResourceRecordTypes.html

https://docs.aws.amazon.com/Route53/latest/DeveloperGuide/DNSLimitations.html

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