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Practical guides, infrastructure notes, and lessons for running your corner of the internet.
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15 articles-
NXDOMAIN vs SERVFAIL: Diagnose DNS Errors Before Changing Your VPS
A missing name, a failed lookup, and an unanswered request are different incidents. Use the response status to choose the next check.
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How to Plan DNS TTLs Before a VPS Migration
A shorter TTL helps a planned cutover only after older answers expire. Build the migration around that timing and the application's writes.
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DNS Records for a VPS Website: A, AAAA, CNAME, and TXT
Map each DNS record to its job, then verify the web hostname without disturbing mail, domain verification, or other services.
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