Shuge Unlimited

Oct 19, 2026 · Databases

Milvus 3.0 Segment Explosion: 12% Seal Threshold, 24h TTL, 16 Compaction Slots

This article dissects Milvus 3.0's default segment sealing behavior — 12% fill threshold, 24-hour TTL, and 16 compaction slots — explaining how sharding, large batches, and delete chains multiply segment counts, why compaction falls behind due to queue and slot bottlenecks, and the correct troubleshooting order: seal conditions first, compaction health second, manual force merge or clustering compaction last.