Public DNS refers to a Domain Name System that is accessible to the general public over the internet. It translates human-readable domain names, like www.example.com, into IP addresses that computers use to identify each other on the network.
For example, when you enter a website's URL into your browser, your device sends a request to a DNS server to resolve the domain name into an IP address. A public DNS service, such as Google's 8.8.8.8 or Cloudflare's 1.1.1.1, can handle this translation.
In the context of cloud computing, using a reliable public DNS service can improve the performance and security of internet-connected applications. For instance, Tencent Cloud offers its own DNS service, which provides high availability and low latency for DNS queries, helping to optimize the routing of internet traffic for cloud-based services.