Struct FallbackPolicy 

pub struct FallbackPolicy {
    pub ratio_threshold: f64,
    pub min_delta_for_fallback: usize,
}

Policy for deciding when a view should fall back to full recomputation.

If the delta set is large relative to the materialized view, incremental processing may be slower than just recomputing everything. The threshold is configurable per-domain.

Fields

ratio_threshold: f64

If delta_size / materialized_size exceeds this ratio, fall back. Default: 0.5 (50% — delta is more than half the full view).

min_delta_for_fallback: usize

Absolute minimum delta size before considering fallback. Prevents fallback on tiny views where ratio is noisy. Default: 10.

Implementations

impl FallbackPolicy

pub fn should_fallback( &self, delta_size: usize, materialized_size: usize, ) -> bool

Whether the view should fall back to full recomputation.

Trait Implementations

impl Clone for FallbackPolicy

fn clone(&self) -> FallbackPolicy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for FallbackPolicy

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

Formats the value using the given formatter.

impl Default for FallbackPolicy

fn default() -> Self

Returns the “default value” for a type.