Happy New Year! We want to kick off 2021 by announcing some improvements to DNS Check.

DNS is a critical component of your infrastructure, enabling your services to reach the endpoints they rely on and connecting your users to your web applications from anywhere in the world. In order to keep your DNS healthy and performant, you need complete visibility into both internal and external DNS resolution. Datadog is excited to announce new DNS monitoring features that help you troubleshoot DNS end-to-end, so you can ensure your applications’ performance and availability.

The most common problems and outages in a Kubernetes cluster come from coreDNS, so learning how to monitor coreDNS is crucial. Imagine that your frontend application suddenly goes down. After some time investigating, you discover it’s not resolving the backend endpoint because the DNS keeps returning 500 error codes. The sooner you can get to this conclusion, the faster you can recover your application.

In order to communicate, web pages, devices and applications need a common naming system which allows them to identify each other and send information. This is particularly important when the communication takes place over the Internet because of the large number of services and websites that need to be identified. This is why the Domain Name System (DNS) is so important for businesses. It matches website pages and devices to an IP address that can be traced by other devices.

Today’s Tip of the Day is the final of three focused on Domain Name System (DNS) monitoring. In the rest of the series, we looked at how digital experience monitoring (DEM) can (i) help ensure users are served by the correct DNS server to reduce latency and (ii) help to guard against DNS-related attacks. In today’s post, we talk about Anycast DNS, the advantages it provides, the challenges it presents in relation to troubleshooting DNS issues, and how to overcome them with Catchpoint.

Today’s Tip of the Day is the second in a three-part series on Domain Name System (DNS) monitoring. In the first, we looked at how the application delivery chain works and the way in which many companies outsource their DNS to third parties with a global presence in order to reduce latency. The connected tip was focused on ensuring users are served by the correct DNS server.