Voltmart ERP
An electronics ERP: a sales dashboard over a columnar fact table, plus customers, catalog, inventory, orders, invoices, payments and a double-entry ledger in row-store tables.
What it shows. Row store and MergeTree in one app, transactions across tables, queues, three cron triggers, email, images, AI briefing, WebSockets and SSE, signed export links.
Measured. Seeded with the xl25m profile: 11.3 million rows, dashboard in 64 ms, first customers page in 298 ms. MacBook Pro M4 Max, local dev node, 2026-11-03.