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Ideas & practice
Automation, digital systems and analytics — notes from real work with companies.
10 September 2026 · 5 min read
Changing hosting without downtime: how it is actually prepared
A move done properly goes unnoticed. TTLs, a staging environment, double mail synchronisation, and the order of operations that removes the outage window.
migrations
DNS
hosting
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10 September 2026 · 4 min read
How long DNS propagation takes (and why it is rarely to blame)
"48 hours of propagation" is a phrase for making a wait sound normal. What actually happens when you change a record, how to read the TTL, and what to do when the site does not come back.
DNS
TTL
migrations
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10 September 2026 · 4 min read
Moving mailboxes without losing the archive
Changing mail provider while bringing ten years of history, folders and attachments along. How the synchronisation works, the second pass, and how long to keep the old server on.
email
migrations
IMAP
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