Struct FreezerOptions 

pub struct FreezerOptions {
    pub tick: Duration,
    pub hot_tier_bytes: u64,
    pub batch_rows: usize,
    pub compact_when_segments_exceed: usize,
    pub compact_target_bytes: u64,
}

v7.2.1 — knobs for Database::spawn_background_freezer.

Fields

tick: Duration

Tick interval. Worker wakes every tick, checks the catalog’s hot_tier_bytes, and freezes if over budget.

hot_tier_bytes: u64

Hot-tier byte budget. Exceeded → next tick freezes the largest table’s oldest batch_rows rows into a new cold segment.

batch_rows: usize

Max rows the freezer demotes per fire.

compact_when_segments_exceed: usize

v7.7.4 — auto-compact threshold. When the catalog has at least this many cold segments across all tables, the freezer fires a compaction pass after its next freeze. Set to usize::MAX to disable auto-compact entirely; the default is 64, matching the spg-server operating point for SPG_COLD_COMPACT_SEGMENT_THRESHOLD.

compact_target_bytes: u64

v7.7.4 — target segment size for compaction merges, in bytes. Default 64 MiB, mirroring spg-server. Small segments below this size are merge candidates; segments at or above stay untouched.

Trait Implementations

impl Clone for FreezerOptions

fn clone(&self) -> FreezerOptions

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for FreezerOptions

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for FreezerOptions

fn default() -> Self

Returns the “default value” for a type.