Class: Makitoo::FeatureFlag::MemoryCache

Inherits:
Object
  • Object
show all
Defined in:
lib/makitoo/feature_flag/memory_cache.rb

Instance Method Summary collapse

Constructor Details

#initialize(logger, ttl = 20.seconds) ⇒ MemoryCache

Returns a new instance of MemoryCache.



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# File 'lib/makitoo/feature_flag/memory_cache.rb', line 6

def initialize(logger, ttl = 20.seconds)
  @logger = logger
  @cache = {}
  @ttl = ttl
  @lock = Mutex.new
end

Instance Method Details

#get(key) ⇒ Object 



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# File 'lib/makitoo/feature_flag/memory_cache.rb', line 13

def get(key)
  if @cache.has_key?(key)
    if @cache[key][:end] > Time.now()
      @logger.debug 'Cache hit'
      @cache[key][:value]
    else
      @logger.debug 'Cache invalid'
      @lock.synchronize do
        @cache.delete(key)
      end
      nil
    end
  else
    @logger.debug 'Cache miss'
    nil
  end
end

#put(key, value) ⇒ Object 



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# File 'lib/makitoo/feature_flag/memory_cache.rb', line 31

def put(key, value)
  @logger.debug 'Cache put'
  @lock.synchronize do
    @cache[key] = {
      value: value,
      end: Time.now() + @ttl
    }
  end
end