Struct TimeBoundCache

pub struct TimeBoundCache<K, V> { /* private fields */ }

A hash map where entries expire after a time

Implementations

impl<K: Hash + Eq + Clone, V> TimeBoundCache<K, V>

pub fn insert(&mut self, key: K, value: V, expires: Instant)

Insert an item into the cache, marked with an expiration time.

pub fn contains_key(&self, key: &K) -> bool

Returns true if the map contains a value for the specified key.

pub fn remove(&mut self, key: &K) -> Option<V>

Remove an item from the cache.

pub fn len(&self) -> usize

Get the number of entries in the cache.

pub fn is_empty(&self) -> bool

Returns true if the map contains no elements.

pub fn get(&self, key: &K) -> Option<&V>

Get an item from the cache.

pub fn expires(&self, key: &K) -> Option<&Instant>

Get the expiration time for an item.

pub fn iter(&self) -> impl Iterator<Item = (&K, &V, &Instant)>

Iterate over all items in the cache.

pub fn expire_until(&mut self, instant: Instant) -> usize

Remove all entries with an expiry instant lower or equal to instant.

Returns the number of items that were removed.

Trait Implementations

impl<K: Debug, V: Debug> Debug for TimeBoundCache<K, V>

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

Formats the value using the given formatter.

impl<K, V> Default for TimeBoundCache<K, V>

fn default() -> Self

Returns the “default value” for a type.