Enum CachePolicy 

pub enum CachePolicy {
    Permanent,
    TimeBound {
        ttl: Duration,
    },
}

Cache policy attached to an super::executor::ExecuteOptions. Callers either know their query’s result is permanent under substrate semantics (At / closed Between) and pass Permanent, or accept that the result represents a snapshot of moving state and want TimeBound freshness.

The default is TimeBound { ttl: 5s }.

Variants

Permanent

Hold until LRU eviction. No staleness deadline beyond capability-index-version mismatch.

TimeBound

TTL-bounded; entry expires after ttl regardless of the capability-index version.

Fields

ttl: Duration

Wall-clock duration after which the entry is treated as stale.

Trait Implementations

impl Clone for CachePolicy

fn clone(&self) -> CachePolicy

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CachePolicy

impl Debug for CachePolicy

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

Formats the value using the given formatter.

impl Default for CachePolicy

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for CachePolicy

fn eq(&self, other: &CachePolicy) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl StructuralPartialEq for CachePolicy