intermediate · 18 min · $5.00
Zero-Downtime Deploys with Kamal
A deploy shouldn't be a held breath. With health checks and overlap, the old version serves until the new one is ready.
After this: Ship a new version without dropping a single request.
Kamal rolls out containers with a health-checked, overlapping cutover — the proxy keeps sending traffic to the old container until the new one passes.
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