Method: IdentityCache.fetch_multi

Defined in:
lib/identity_cache.rb

.fetch_multi(*keys) ⇒ Object

Same as fetch, except that it will try a collection of keys, using the multiget operation of the cache adaptor.

Parameters

keys A collection or array of key strings



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# File 'lib/identity_cache.rb', line 173

def fetch_multi(*keys)
  keys.flatten!(1)
  return {} if keys.empty?

  result = if should_use_cache?
    fetch_in_batches(keys.uniq) do |missed_keys|
      results = yield missed_keys
      results.map { |e| map_cached_nil_for(e) }
    end
  else
    results = yield keys
    Hash[keys.zip(results)]
  end

  result.each do |key, value|
    result[key] = unmap_cached_nil_for(value)
  end

  result
end