Struct CachePolicy 

pub struct CachePolicy {
    pub enabled: bool,
    pub ttl: Option<Duration>,
    pub tier_hint: Option<CacheTier>,
    pub bypass: bool,
    pub invalidation_hint: Option<InvalidationHint>,
}

Policy controlling how a Query result is cached. Carried in Context and optionally overridden on Query.cache_policy.

Fields

enabled: bool

If false, do not read from or write to any cache tier.

ttl: Option<Duration>

Explicit time-to-live; None means ‘defer to tier default’.

tier_hint: Option<CacheTier>

Preferred tier for this query; None means ‘tier decides’.

bypass: bool

If true, skip cache read but still write-through on miss.

invalidation_hint: Option<InvalidationHint>

Optional hint to the cache about when to invalidate.

Implementations

impl CachePolicy

pub fn new() -> Self

Construct a default policy: enabled, no TTL, no tier hint, no bypass, no invalidation hint.

pub fn disabled() -> Self

Disable all caching for this query.

pub fn with_ttl(self, ttl: Duration) -> Self

Set the TTL.

pub fn with_tier(self, tier: CacheTier) -> Self

Set the tier hint.

pub fn with_bypass(self, bypass: bool) -> Self

Set the bypass flag.

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 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<'de> Deserialize<'de> for CachePolicy

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for CachePolicy

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for CachePolicy

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for CachePolicy