Barograph.Database (barograph v0.2.0)

Supervisor for one open database (spec §4.1).

Children:

Barograph.SeriesCache — ETS label hash → series id cache
Barograph.Writer — owns the single write connection
Barograph.Refresher — periodic continuous-aggregate refresh
Barograph.Ingest.Supervisor — opt-in, only present when :ingest is given to Barograph.open/2 (spec §10)

Started with :rest_for_one so a crash of the series cache also restarts the writer, which re-warms the cache on boot.

Summary

Returns a specification to start this module under a supervisor.

start_link(opts)

Returns a specification to start this module under a supervisor.

@spec start_link(keyword()) :: Supervisor.on_start()