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How to Investigate a Deployment That Succeeds but Leaves Old Code Running

11/10/2026

A successful pipeline may update files while workers, containers, or a CDN continue serving an older build. The deployment status alone does not prove every runtime has switched.

What to check

Compare build identifiers across instances, check rollout and health status, inspect worker restart behavior, and review cache headers and CDN invalidation results.

Recommended next step

Make release identity visible, verify all serving instances, and define rollback if mixed versions persist. Informatix Systems can review deployment pipelines and production rollout behavior.