AWS Learner
Route53 - Basic Concept's -Part1

Route53 - Basic Concept's -Part1

Utkarsh Rastogi's photo
Utkarsh Rastogi
·

3 min read

Amazon Cloud Concepts Learning --> Day8

Route53

Amazon Route 53 is a highly available and scalable Domain Name System (DNS) web service. Three main purposes of Route53 are

  • Domain Registration

  • DNS Routing

  • Health Checking

In case you decide to utilize Route 53 for all three purposes, be sure to adhere to the following sequence:

Register domain names

Your website needs a name, such as api.com. Route 53 lets you register a name for your website or web application, known as a domain name.

Route internet traffic to the resources for your domain

When a user opens a web browser and enters your domain name (api.com) or subdomain name (test.api.com) in the address bar, Route 53 helps connect the browser with your website or web application.

Check the health of your resources

Route 53 sends automated requests over the internet to a resource, such as a web server, to verify that it is reachable, available, and functional. You also can choose to receive notifications when a resource becomes unavailable and choose to route internet traffic away from unhealthy resources.

Route53 Basic Concepts

Domain Registration Concepts

Overview of concepts that are related to domain registration

  • Domain Name - The name, such as test.com, that a user types in the address bar of a web browser to access a website or a web application.

  • Top-level Domain - The last part of domain such as .com, .org

Domain Name System (DNS) Concepts

Overview of concepts that are related to DNS

  • Alias Record - A type of record that you can create with Amazon Route 53 to route traffic to AWS resources such as Amazon CloudFront distributions and Amazon S3 buckets.

  • Authoritative Name Server - A name server that has definitive information about one part of the Domain Name System (DNS) and that responds to requests from a DNS resolver by returning the applicable information.

  • CIDR Block - A CIDR block is an IP Range used with IP-Based Routing.

  • Time to Live (TTL) - The amount of time, in seconds, that you want a DNS resolver to cache (store) the values for a record before submitting another request to Route 53 to get the current values for that record.

Health Checking Concepts

Overview of concepts that are related to Route53 Health Checking

  • DNS failover - A means to route traffic to healthy resources and away from unhealthy resources.

  • Endpoint - The resource that you set up a health check to keep an eye on, like an email server or web server.

  • Health check - An element of Route 53 that enables the following actions:

  1. Check the health of a designated endpoint, such a web server.

  2. Receive alerts when an endpoint becomes unhealthy, if desired.

  3. Set up DNS failover if you would like to be able to redirect internet traffic from a bad resource to a good one.

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