अनुप्रयोगहरूलाई सामान्यतः डिभाइसमा स्थानीय रूपमा डेटा भण्डार गर्न आवश्यक हुन्छ — प्रयोगकर्ता प्राथमिकताहरू, क्यास गरिएको डेटा, अफलाइन सामग्री। Flutter ले धेरै विकल्पहरू प्रदान गर्छ — shared_preferences (key-value), SQLite (relational), र अन्य — प्रत्येक विभिन्न आवश्यकताहरूको लागि उपयुक्त।
Local storage विकल्पहरू
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)
