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Cloudflare and the infinite sadness of migrations

Cloudflare and the infinite sadness of migrations

A recent Cloudflare DNS outage traced back to legacy gear tangled with global config changes. Turns out, incomplete migrations can still pack a punch. Their newer topology system does support progressive rollouts—but running it side-by-side with the old one just made the blast radius bigger.

System shift: Keeping legacy and modern systems online together adds fragility. The longer a migration drags, the higher the operational debt.


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