Lumen Scanner
A live order-flow scanner that reads the tape by volume.
I · Brief
The problem.
Retail scanners lag by seconds. I wanted one that moves at the same cadence as the tape itself.
II · Build
What I shipped.
A live volume-delta scanner with alerts and replay mode.
Rust feed-handler, Postgres TimescaleDB, React front-end with D3.
Latency is the whole product. Lumen's p95 is 18ms end-to-end.
III · Counted
3,210
184M
18ms
IV · Specs
The stack.
- Team size
- 1
- Category
- Finance / Scanner
- Version
- V1.4
- Shipped
- Shipped Dec 2024
V · Changelog
- Replay mode, per-symbol alerts.
- First live market session.