Struct MemoryCappedHashmap

pub struct MemoryCappedHashmap { /* private fields */ }

Available on crate feature object-cache-dynamic only.

An LRU cache with hash map backing and an eviction rule based on the memory usage for object data in bytes.

Implementations

impl MemoryCappedHashmap

pub fn capacity(&self) -> usize

The amount of bytes we can hold in total, or the value we saw in new(…).

pub fn new(memory_cap_in_bytes: usize) -> MemoryCappedHashmap

Return a new instance which evicts least recently used items if it uses more than memory_cap_in_bytes object data.

Trait Implementations

impl Object for MemoryCappedHashmap

fn put(&mut self, id: ObjectId, kind: Kind, data: &[u8])

Put the object going by id of kind with data into the cache.

fn get(&mut self, id: &ObjectId, out: &mut Vec<u8>) -> Option<Kind>

Try to retrieve the object named id and place its data into out if available and return Some(kind) if found.