Struct Tier 

pub struct Tier { /* private fields */ }

One tier of a HybridStore: a backend plus its horizon advertiser.

Implementations

impl Tier

pub fn new( access: Arc<dyn MetricAccess>, earliest_ms: Arc<dyn Fn() -> Option<i64> + Send + Sync>, ) -> Self

A tier whose horizon is computed on demand (e.g. the in-memory tier’s retention edge).

pub fn unbounded(access: Arc<dyn MetricAccess>) -> Self

A tier that covers back as far as any query asks (a durable tail such as sqlite) — always serves the older remainder.