Trait CacheEntry 

pub trait CacheEntry:
    Any
    + Send
    + Sync {
    // Required method
    fn cost(&self) -> usize;
}

Cached values expose their memory cost directly to the cache backends.

Required Methods

fn cost(&self) -> usize

Returns the cost of this value in bytes.

Implementations

impl dyn CacheEntry

pub fn downcast<T>(self: Arc<Self>) -> Option<Arc<T>>

where T: Send + Sync + 'static,

Attempts to downcast an Arc<dyn CacheEntry> to a concrete entry type.

Dyn Compatibility

This trait is dyn compatible.

In older versions of Rust, dyn compatibility was called "object safety".

Implementations on Foreign Types

impl<T> CacheEntry for Arc<T>

where T: CacheEntry + ?Sized + 'static,

fn cost(&self) -> usize

Implementors