fast-lru

A cache module that deletes the least-recently-used items, inspired by lru-cache and implementing GeeksForGeeks' algorithm

Options

When creating a new fast-LRU cache instance, you can optionally supply three separate options:

getSize: a function used to calculate the size of an item in the cache. The function is passed the value and the key as an argument. By default items will have a size of 1.
maximumSize: a number representing the maximum size of the cache.
dispose a function which is called when an item is removed from the cache (either due to cache size limits or by setting a different value for a key). This function is passed both the key and value as arguments.

has: Given a key, returns whether or not an item is in the cache.
get: Given a key, returns the item in the cache or undefined.
set: Given a key and value, assigns the value to that key in the cache. Returns true if the item was successfully added to the cache, otherwise returns false.