ANS-C01 Question 491
Single answerYour company is deploying a multi-region application that serves users across the globe. To ensure low latency and high availability, you decide to use Amazon Route 53 for DNS routing. The application has a failover mechanism where traffic should be routed to a secondary region if the primary region becomes unhealthy. Which Amazon Route 53 routing policy should you use to achieve this?
- A
Latency-based routing
- B
Geolocation routing
- C
Failover routing
- D
Weighted routing
Show answer and explanation
Correct answer: C
Explanation
Failover routing in Amazon Route 53 is specifically designed for scenarios where you need to route traffic to a secondary resource in case the primary resource becomes unavailable. By configuring health checks on the primary resource, Route 53 can automatically redirect traffic to the secondary region when necessary, ensuring high availability for the application.
- A. Incorrect.
Latency-based routing directs traffic to the region with the lowest latency for the user. While this improves performance, it does not handle failover scenarios where one region becomes unhealthy.
- B. Incorrect.
Geolocation routing routes traffic based on the geographical location of the user. This is not designed for failover scenarios either.
- C. Correct.
Failover routing is specifically designed to handle scenarios where traffic needs to be redirected to a secondary region if the primary region becomes unhealthy. This matches the requirements of the question.
- D. Incorrect.
Weighted routing allows you to route traffic based on assigned weights to different resources. It does not natively handle failover scenarios.