This alert fires when the database appears to be very fragmented – in other words, the database is small, but is using a large allocation of space on the disk (suggesting lots of “gaps” / fragmentation).
Platform engineering from real production experience

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Platform Notes is a collection of practical insights drawn from real-world experience operating cloud-native platforms in production environments. The content here focuses on what actually happens when systems are running at scale — from Kubernetes troubleshooting and upgrades to diagnosing infrastructure and reliability issues across cloud platforms.
Rather than covering theoretical setups or beginner guides, this site documents patterns observed during incidents, on-call scenarios, and day-to-day platform operations. The goal is to share experience-driven learnings that help engineers better understand why things fail, how to reason through complex problems, and what to look for when operating Kubernetes and cloud infrastructure in real environments.