class LRUCache(T)

• LRUCache(T)
• Reference
• Object

Overview

A simple LRU Cache to store items of whatever type T

Defined in:

Constant Summary

Log = ::Log.for(self)

VERSION = "1.0.0"

Constructors

• .new(max_size : Int32 | Int64, clean_interval : Time::Span | Nil = 1.seconds)

  Creates a new LRUCache with the given #max_size and clean_interval

Instance Method Summary

• #del(key : String) : Nil

  Deletes a item from the LRU Cache.

• #get(key : String) : T | Nil

  Gets the item associated with the key

• #items : Hash(String, Item(T))

  Gets all the items that the LRU cache is holding.

• #max_size : Int64 | Int32

  Gets the max amount of items the LRU cache can hold.

• #set(key : String, value : T, expire_time : Int64 | Nil = nil) : Nil

  Sets a item of the desired Type T into the LRU Cache.

• #size : Int64

  Gets the current amount of items the LRU cache is holding.

Constructor Detail

Instance Method Detail

cache = LRUCache(String).new(5)

cache.set("key", "value", 5)
cache.del("key")

pp cache.get("key") # => nil

cache = LRUCache(String).new(5)

cache.set("key", "value", 5)

pp cache.get("key") # => "value"

cache = LRUCache(String).new(5)

cache.set("key", "value", 5)
cache.set("key2", "value2")

pp cache.items # => {"key" => LRUCache::Item(String)(@expires_at=1771043818, @value="value"), "key2" => LRUCache::Item(String)(@expires_at=nil, @value="value2")}

cache = LRUCache(String).new(5)

cache.set("key", "value", 5)

pp cache.get("key") # => "value"

cache = LRUCache(String).new(5)

cache.set("key", "value", 5)
cache.set("key2", "value2")

pp cache.size # => 2