JezK
Edit File: options_cache.rb
module MultiJson module OptionsCache extend self def reset @dump_cache = {} @load_cache = {} end def fetch(type, key, &block) cache = instance_variable_get("@#{type}_cache") cache.key?(key) ? cache[key] : write(cache, key, &block) end private # Normally MultiJson is used with a few option sets for both dump/load # methods. When options are generated dynamically though, every call would # cause a cache miss and the cache would grow indefinitely. To prevent # this, we just reset the cache every time the number of keys outgrows # 1000. MAX_CACHE_SIZE = 1000 def write(cache, key) cache.clear if cache.length >= MAX_CACHE_SIZE cache[key] = yield end end end