Crate spectra_backend_sqlite 

Durable embedded SQLite metrics and events storage.

Enable with the spectra feature sqlite and wire through Spectra::builder().

• SqliteMetricsBackend::new / SqliteEventsBackend::new — open or create database files
• Parent directories are created automatically; uses spawn_blocking for rusqlite I/O.
• query_aggregate is not yet implemented (returns empty series).
• Default event query limit is 1000 rows when limit is unset.

Structs

SqliteEventsBackend

Durable SQLite structured-event storage in the spectra_events table.

SqliteMetricsBackend

Durable SQLite metrics storage in the spectra_metrics table.