From: Maya Chen <maya.chen@example.com>
To: Storage Engineering <storage-eng@example.com>
Subject: Follow-up on elevated write latency in the KV cluster
Date: Fri, 31 Jul 2026 14:18:00 -0400

Hi team,

We traced this morning’s increase in p99 write latency to compaction pressure on three nodes in the us-east cluster. Replication remained healthy, and we did not observe any lost or inconsistent keys.

We’ve reduced the compaction concurrency and moved two hot partitions to nodes with more available I/O capacity. Latency is back within the normal range, but please avoid large backfills until tomorrow’s maintenance window.

I’ll post the incident timeline and proposed partition-balancing changes after the afternoon review.

Thanks,
Maya