class ActiveSupport::Cache::Store

def read_multi_entries(names, **options)

implement this method.
Reads multiple entries from the cache implementation. Subclasses MAY
def read_multi_entries(names, **options)
  names.each_with_object({}) do |name, results|
    key   = normalize_key(name, options)
    entry = read_entry(key, **options)
    next unless entry
    version = normalize_version(name, options)
    if entry.expired?
      delete_entry(key, **options)
    elsif !entry.mismatched?(version)
      results[name] = entry.value
    end
  end
end