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Your platform keeps routing traffic to a pod that's still crashing, because as far as it can tell, everything is fine.
What you'll have at the end
A readiness check that genuinely fails while the app is still opening its database connection or warming its cache, kept separate from a liveness check that only watches the process itself
You need
A running API with two separate endpoints already built, one that answers instantly to confirm the process itself is alive and one that only succeeds once its real dependencies, like a database connection or a warmed cache, are actually ready, deployed with a platform that routes traffic to it.
Not covered
Building the two endpoints' own dependency-check logic inside the app: this assumes they already exist and wires the platform's own checks to actually use them.
Leans on
Fix a health check that checks nothing
if your app's own health endpoints don't actually check anything yet, build those first before wiring the platform to trust them
Stop a rolling deploy from cutting off requests mid-flight
covers what happens on the way out of rotation during a deploy: the other half of a clean rollout, going the opposite direction
Checked 19 Aug 2026
Part of the Backend Deployment cookbook