Aplikasi sering memerlukan menyimpan data secara lokal di perangkat — preferensi pengguna, data cache, konten offline. Flutter menawarkan beberapa opsi — shared_preferences (key-value), SQLite (relasional), dan lainnya — masing-masing cocok untuk kebutuhan berbeda.
Opsi penyimpanan lokal
SHARED_PREFERENCES → simple KEY-VALUE storage (settings, flags, small data):
→ store primitives (strings, ints, bools) — like a simple persistent map
→ for: user preferences, tokens, simple flags (NOT large/structured data)
SQLITE (sqflite) → a full relational DATABASE on the device:
→ tables, SQL queries — for STRUCTURED, larger data; complex queries; relationships
HIVE / ISAR → fast NoSQL local databases (key-value/object stores) — popular, fast,
Dart-native (no SQL); good for structured local data
FILE storage → read/write files directly (path_provider for directories)
SECURE storage → flutter_secure_storage for SENSITIVE data (tokens, credentials) —
encrypted (keychain/keystore)
