pub const CONCEPTS: usize = 70;Expand description
Concept upserts (write_concepts).
Linear at ~23 µs per row, so unlike EDGES this size is a genuine
throughput sacrifice: 1,000-row chunks ran at 23.6 µs per row against
~35 µs here. Paid deliberately — a 1,000-row chunk takes 24 ms, eight
times the bound.