ExpirationCache<K, V> class

A cache which evicts entries after a certain amount of time

Inheritance

Constructors

ExpirationCache(Storage<K, V>? storage, Duration expiration, int capacity)

Properties

capacity → int
The maximum capacity of the cache. When more values will be added to the cache the least "desired" values will be removed. "desired" values are determined by the type of the cache. For example the lruCache will evict the item wich was not used for the longest time.
finalinherited
expiration → Duration
final
hashCode → int
The hash code for this object.
no setterinherited
lastCleanup ↔ int
getter/setter pair
length → int
return the number of element in the cache
no setterinherited
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
storage → Storage<K, V>
finalinherited

Methods

beforeGet(CacheEntry<K, V> entry) → CacheEntry<K, V>?
Process the entry found in the storage before returning it. If this method returns null the entry is considered as expired and will not be returned to the caller.
clear() → void
remove all the entry inside the cache
inherited
containsKey(K key) → bool
Check if the cache contains a specific entry. It is better to use get and check for null-returns
inherited
createCacheEntry(K key, V element) → CacheEntry<K, V>
internal set
get(K key) → V?
return the element identified by key
inherited
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
onCapacity(K key, V element) → void
called if we want to insert another item denoted by key and element into the map. This method checks if the capacity is reached and eventually evicts old items.
remove(K key) → V?
Removes an entry from the cache. Returns null if the entry was not found. Note that the entry which may be returned is already evicted.
inherited
set(K key, V element) → void
add element in the cache at key
inherited
toString() → String
A string representation of this object.
inherited

Operators

operator ==(Object other) → bool
The equality operator.
inherited
operator [](K key) → dynamic
return the value at key. Same as get
inherited
operator []=(K key, V element) → void
assign element for key. Same as set
inherited