get method

@override CacheEntry? get(String key)

Retrieves a cache entry by its key.

Returns null if:

• The key doesn't exist
• The entry has expired (implementations should auto-delete expired entries)

Implementations should check CacheEntry.isExpired and automatically delete expired entries before returning null.

Implementation

@override
CacheEntry? get(String key) {
  final entry = _cache[key];
  if (entry == null) return null;

  // Check expiration
  if (entry.isExpired) {
    delete(key);
    return null;
  }

  // Update LRU tracking
  _accessOrder
    ..remove(key)
    ..addLast(key);

  return entry;
}