code: func DefaultConfig(eviction time.Duration) Config {
  	return Config{
  		Shards:             1024,
  		LifeWindow:         eviction,
  		CleanWindow:        0,
  		MaxEntriesInWindow: 1000 * 10 * 60,
  		MaxEntrySize:       500,
  		Verbose:            true,
  		Hasher:             newDefaultHasher(),
  		HardMaxCacheSize:   0,
  		Logger:             DefaultLogger(),
  	}
  }
docs: // DefaultConfig initializes config with default values.
  // When load for BigCache can be predicted in advance then it is better to use custom config.