Description: A TTL (Time to Live) record in DNS is an essential component that determines the duration for which a DNS record can be cached by name servers and other network devices. This value is expressed in seconds and is crucial for the efficient management of domain name resolution. A shorter TTL allows changes to DNS records to propagate more quickly, which is useful in situations where frequent modifications are anticipated, such as changes in IP addresses or server migrations. Conversely, a longer TTL can reduce the load on DNS servers by decreasing the frequency of queries, but it may delay the propagation of changes. In DNS, administrators can set the TTL according to the specific needs of their infrastructure, balancing update speed with network traffic efficiency. This record is not only fundamental for the daily operation of online services but also plays an important role in optimizing performance and availability of websites.
