SQLite sink (local)

import { sqliteSink } from "@amit641/llmmeter/sqlite";
const sink = sqliteSink({ filePath: "./.llmmeter/llmmeter.db" });

Backed by better-sqlite3 with WAL mode for concurrent reads. The sink batches writes (default 50 records or 500 ms, whichever comes first) and flushes on process.exit.

Comes with the read API used by the dashboard:

• listCalls(db, filters)
• aggregateByBucket(db, bucketSeconds, filters)
• topByDimension(db, "feature" | "model" | …, filters)
• totals(db, filters)
• pruneOlderThan(db, beforeTs)

Single-instance production deployments (one container, one disk) often run perfectly fine on SQLite for thousands of calls per second.