The DNS Previewer blog
Field notes on DNS migrations, WordPress hosting, and the parts of running websites that break at 3am — written from the trenches by people who've been on those calls.
- DNS
I've never met a senior sysadmin who believes in DNS propagation. Here's the version they tell each other.
Your hosting company says 'wait 24-48 hours for DNS propagation.' That's not how DNS works — and the real mechanism explains why your migration broke at 3am.
Romail Shah··13 min read - Migration
I crashed a client's WordPress site for 14 hours during a DNS migration. Here's the exact pre-flight checklist I now use.
After a botched Black Friday migration cost a client $14k in downtime, I built an 18-step pre-flight checklist that catches the failure modes WP migration tutorials skip.
Romail Shah··14 min read
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