Your Service Is Healthy, but Its Data Isn't: Rethinking Cloud-Native Health Checks
Cloud Native Now, Friday, September 18th, 2026
Every component can report healthy while the data flow has silently stopped progressing, so treat freshness as a health signal.
Some of the hardest production issues start with nothing failing: the application runs, the database is reachable, requests complete and the dashboard is green, but users report the information they depend on has stopped changing.
If an upstream producer stops sending updates, the ingestion service stays available, the database stays reachable and the API keeps returning the last stored value, so every component reports itself healthy while the overall data flow has stalled.
The author argues service health and data health are not the same thing for data-intensive applications, and that freshness belongs in health checks: define how often information is expected to change and compare that against the most recent successful update.