Route 53 DNS

Learn about DNS management, routing policies, health checks, and route traffic effectively.

route53-config.json
{
"Name": "example.com",
"Type": "A",
"TTL": 300,
"RoutingPolicy": "Weighted"
}
route53-config.json
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Tutor:Amazon Route 53 is a highly available and scalable cloud Domain Name System (DNS) web service. It's designed to give developers and businesses a reliable way to route end users to internet applications.


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Concept 1: Route 53 Basics

Amazon Route 53 is a highly available and scalable cloud Domain Name System (DNS) web service. It's designed to give developers and businesses a reliable way to route end users to internet applications.

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What are the main functions of Route 53?

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Route 53 (DNS Management & Routing Policies)

Author

Pascual Vila

Cloud Instructor.

Amazon Route 53 is a highly available and scalable cloud Domain Name System (DNS) web service. It's designed to give developers and businesses a reliable way to route end users to internet applications.

DNS Routing

Route 53 performs three main functions: domain registration, DNS routing, and health checking. It translates human-readable domain names into IP addresses and routes traffic to your resources.

Routing Policies

Route 53 supports multiple routing policies: Simple (default), Weighted (distribute traffic), Latency-based (route to lowest latency), Failover (active-passive), Geolocation (route based on location), and Multi-value (multiple healthy records).

Health Checks

Route 53 health checks monitor the health and performance of your applications, servers, and other resources. You can configure health checks to monitor HTTP, HTTPS, or TCP endpoints.

Route 53 Glossary

Simple Routing Policy
The default routing policy. Returns one record per query. If multiple records exist, Route 53 returns all values in a random order. Ideal for a single resource or multiple resources that serve the same purpose.
Weighted Routing Policy
Allows you to distribute traffic across multiple resources by assigning weights from 0 to 255. Route 53 routes traffic proportionally based on these weights. Useful for A/B testing and gradual migrations.
Latency-based Routing Policy
Routes traffic to the resource with the lowest latency from the user's location. Route 53 determines latency by measuring the time it takes to reach each region from the user's location. Ideal for global applications.
Failover Routing Policy
Allows you to configure active-passive failover. Route 53 monitors the health of your primary resource and automatically fails over to a secondary resource if the primary becomes unhealthy.
Health Check
Monitors the health and performance of your applications, servers, and other resources. You can configure health checks to monitor HTTP, HTTPS, or TCP endpoints. Used for failover scenarios.