Method: Dalli::Client#fetch

Defined in:
lib/dalli/client.rb

#fetch(key, ttl = nil, req_options = nil) ⇒ Object

Fetch the value associated with the key. If a value is found, then it is returned.

If a value is not found and no block is given, then nil is returned.

If a value is not found (or if the found value is nil and :cache_nils is false) and a block is given, the block will be invoked and its return value written to the cache and returned.



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# File 'lib/dalli/client.rb', line 137

def fetch(key, ttl = nil, req_options = nil)
  req_options = req_options.nil? ? CACHE_NILS : req_options.merge(CACHE_NILS) if cache_nils
  val = get(key, req_options)
  return val unless block_given? && not_found?(val)

  new_val = yield
  add(key, new_val, ttl_or_default(ttl), req_options)
  new_val
end