evictExpired method

@override void evictExpired()

Removes all expired entries from the cache.

This is useful for periodic cleanup in long-running applications. Some implementations may call this automatically during get/set operations.

Implementation

@override
void evictExpired() {
  final expiredKeys = <String>[];

  for (final entry in _cache.entries) {
    if (entry.value.isExpired) {
      expiredKeys.add(entry.key);
    }
  }

  expiredKeys.forEach(delete);
}