Write Amplification from Misconfigured Storage Compaction

Disk IOPS utilization and write latency have both spiked during a routine, unremarkable traffic increase. Nothing about the storage engine's deployment or configuration changed today — but something did change three weeks ago: a compaction tuning parameter that quietly raised write amplification without ever crossing an alert threshold on its own. The traffic bump didn't cause this; it only exposed headroom that was already gone. Diagnose the configuration root cause rather than treating this as a simple capacity problem.

Difficulty

Senior Staff

Expected Time

~20 min

Category

Databases & Storage