class JSONAPI::NaiveCache
Cache which memoizes the given block.
It's “naive” because it clears the least-recently-inserted cache entry rather than the least-recently-used. This makes lookups faster but cache misses more frequent after cleanups. Therefore you the best time to use this cache is when you expect only a small number of unique lookup keys, so that the cache never has to clear.
Also, it's not thread safe (although jsonapi-resources is careful to only use it in a thread safe way).
Public Class Methods
new(cap = 10000, &calculator)
click to toggle source
# File lib/jsonapi/naive_cache.rb, line 14 def initialize(cap = 10000, &calculator) @cap = cap @data = {} @calculator = calculator end
Public Instance Methods
get(key)
click to toggle source
# File lib/jsonapi/naive_cache.rb, line 20 def get(key) found = true value = @data.fetch(key) { found = false } return value if found value = @calculator.call(key) @data[key] = value @data.shift if @data.length > @cap return value end