Category: DNS Propagation

High-availability applications are designed to remain accessible and functional even in the face of failures, traffic spikes, and infrastructure changes. Whether supporting millions of users across the globe or powering critical systems that require zero downtime, the architecture of such applications must anticipate and accommodate many forms of disruption. DNS, often considered a background service,…

When organizations choose to use third-party email services such as Google Workspace, Microsoft 365, Zoho Mail, or others, a critical step in the onboarding process involves modifying DNS records to support the new email infrastructure. These DNS changes, which typically include updates to MX (Mail Exchange) records, SPF (Sender Policy Framework), DKIM (DomainKeys Identified Mail),…

Flushing the DNS cache on a Windows computer is a crucial step when dealing with DNS propagation, especially after making changes to DNS records such as switching web hosting providers, updating mail server settings, or modifying CNAME, A, or MX records. The DNS cache stores previously resolved domain names and their corresponding IP addresses locally…