Route 53

Route 53 is DNS (Domain Name System) service provided by Amazon. In addition to registering a domain, running a website you can also perform health check of the instances. These are the three main functions of the Route 53.

Register Domain Names

You must heard the name of 'Godaddy' and other DNS providers. Route 53 lets you register a domain name for your website or web application.

Routing Traffic

Route 53 will route internet traffic to resources for you domain. Route 53 will takes care of domain name resolution. Whenever someone visit your website by typing domain name in browser, route 53 helps your browser to connect to the website or web application.

Health Check

Route 53 helps you the verify whether you web server is reachable or not. It will help you to stop sending request to the unhealthy instance. It can also send you the notification when a resource becomes unavailable.

Different combination of these function can be used. Suppose you have registered your domain form a different domain registrar, you can use Route 53 to route traffic to the web server for your domain and health check for checking health of the web server. You can use all of three functions of route 53.

Health Checking Concepts

One of the beast feature of Route 53 is health check. You can perform health of your web server and stop sending traffic to unhealthy instances.

DNS Failover

When you have multiple web server behind a load balancer doing the same task, you can stop sending traffic to the unhealthy resource. This can be done by configuring health check of the resources and configure record sets in hosted zone to send the traffic to the healthy resources.

Endpoint

Monitoring health check of your web server or mail server can be done by specify endpoint in record sets. Endpoint can be IPV4, IPV6 address and domain name.

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