Are you an enterprise organization looking to safely change your DNS records? Our expert support team addresses common questions about DNS record changes regularly. However, it's crucial to understand how to make these changes without causing any downtime. Many webmasters and developers assume that modifying a record won't have any adverse effects, but the reality is quite different—thanks to caches.
You may have noticed that when you visit a web page multiple times, it loads faster. This improved speed is due to the content being stored in your browser's cache. Similarly, DNS information is also cached by your browser and various resolving name servers (typically provided by your ISP). Consequently, when you make a DNS record change, it can take up to a couple of days for the changes to propagate.
Consider a scenario where you modify a record to direct users to IP address 220.127.116.11 instead of 18.104.22.168. However, until their caches refresh, visitors will still be directed to the old configuration at 22.214.171.124. Since that configuration no longer exists, it may appear as if your website is offline. But worry not! There's a solution.
Understanding TTLs and CachesWhen creating a DNS record, you have the option to adjust the TTL (Time to Live). In DNS Made Easy, the default TTL is set to 1800 seconds (30 minutes). Although this is relatively short, most clients prefer extending it to reduce load on the authoritative name server. Unless you frequently make changes, it's advisable to set the TTL to at least an hour or even a day.
If you need to modify a record or create one while transferring from one service to another, it's essential to set your TTL as low as possible. A shorter TTL minimizes potential downtime. During the transition period, if someone queries your website and their resolving server hasn't refreshed its cache, their query may not resolve. However, by using a shorter TTL, the downtime duration is significantly reduced.
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When it comes to changing DNS records, understanding the potential impact and being equipped with relevant data can help you make informed decisions. Here are some key statistics and insights:
Remember, every organization's DNS environment is unique, and actual results may vary. It's important to analyze your specific DNS infrastructure, monitor the impact of record changes, and iterate based on observed data. By staying informed about DNS record change statistics and leveraging data-driven insights, you can make informed decisions, minimize downtime, and optimize the performance of your enterprise organization's online presence.
Don't let DNS record changes cause unnecessary downtime or performance issues for your enterprise organization. Trust DigiCert DNS Trust Manager to simplify and optimize your DNS management. Take advantage of our industry-leading features and ensure a seamless online experience for your users.
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