sqlite

type Backend struct {
	// contains filtered or unexported fields
}

type Options struct {
	// Path is the database file. It must be a file rather than memory: a
	// profile reads it through a connection of its own.
	Path string

	// Schema resolves a kind to its columns, key and retention. A kind it
	// refuses cannot be written.
	Schema recordstore.SchemaResolver

	// TTL is how long a stream lives from its first append unless Expire moves
	// it, or how long a row of a kind retaining rows lives from its own append.
	// Zero keeps a stream until something expires it, and refuses a kind
	// retaining rows.
	TTL time.Duration

	// Derived marks the file as an index rebuilt from a source. A kind whose
	// columns changed since its table was created is then dropped with every
	// stream it held, for an Indexer to refill; in a durable file the same
	// change is an error, because those rows exist nowhere else.
	Derived bool

	// Now is the clock streams are stamped and expired by. Nil is time.Now.
	Now func() time.Time

	// SweepInterval is how often the file removes the streams whose expiry
	// has passed, rows included, until it is closed. It is required: a stream
	// expires from a ttl or from the source an index mirrors, and a file that
	// never swept would keep every row it was ever given.
	SweepInterval time.Duration
}