How does TTL affect global DNS propagation?
TTL 如何影响全局 DNS 传播？
TTL refers to Time to Live. It indicates the time after which the DNS records for a particular domain are refreshed and the cache is reset. TTL affects global DNS propagation by deciding how long the propagation process takes. If the TTL is set high, it means that the propagation will take a long time. For example, if you make changes to a DNS record that has a TTL of 3600 seconds, it means that the changes will be globally propagated after 1 hour. For 1 hour, the old records will stay in place
TTL 是指生存时间。它表示特定域的 DNS 记录刷新和缓存重置的时间。TTL 通过决定传播过程所需的时间来影响全局 DNS 传播。如果 TTL 设置得很高，则意味着传播将需要很长时间。例如，如果您对 TTL 为 3600 秒的 DNS 记录进行更改，则意味着更改将在 1 小时后全局传播。 1 小时内，旧记录将保留在原处