Zero-Downtime Domain Migration Strategies for Production Web Applications

Migrating a high-traffic domain or moving your infrastructure from one VPS provider to another while minimizing downtime requires careful planning around DNS Time-To-Live (TTL) values.

Pro-tip: Drop your DNS TTL down to 300 seconds (5 minutes) at least 48 hours before initiating the migration. This ensures that when you update your A or CNAME records to point to the new IP address, global DNS resolvers pick up the change almost instantly rather than caching stale records for 24 hours.