flutter_memory_cache

flutter_memory_cache is a lightweight and customizable in-memory cache solution for Flutter applications. It supports various caching strategies such as LRU (Least Recently Used), FIFO (First In First Out), and LFU (Least Frequently Used). With easy-to-set TTL (Time To Live) options, it helps optimize performance by reducing frequent network or database requests.

Features

  • Multiple Caching Strategies: Choose between LRU, FIFO, or LFU to suit your use case.
  • TTL (Time To Live): Set expiration time for cache entries.
  • High Performance: Efficient memory management to keep your app running smoothly.
  • Flexible: Easy to configure to meet different caching needs.

Getting Started

Prerequisites

  • Dart SDK 2.12+
  • Flutter 2.0+

To use this package, include it in your pubspec.yaml file:

dependencies:
  flutter_memory_cache: ^0.0.1

Usage

To use flutter_memory_cache, follow these steps:

  1. Add the dependency: Run the following command to get the package:

    flutter pub get

  2. Usage Example:

    import 'package:flutter_memory_cache/flutter_memory_cache.dart';

void main() {
  // Create a cache with a capacity of 3 entries and LRU strategy
  final cache = Cache<String, String>(
    capacity: 3,
    ttl: Duration(seconds: 5),
    policy: LRU(),
  );

  cache.put('key1', 'value1');
  cache.put('key2', 'value2');
  cache.put('key3', 'value3');

  print(cache.get('key1')); // Output: value1

  Future.delayed(Duration(seconds: 6), () {
    print(cache.get('key1')); // Output: null (key1 has expired)
  });
}

  3. Supported Policies:

    • LRU (Least Recently Used): Removes the least recently accessed item when the capacity limit is reached.
    • FIFO (First In First Out): Removes the earliest added item when the capacity limit is reached.
    • LFU (Least Frequently Used): Removes the least frequently accessed item when the capacity limit is reached.

  4. Additional Information:

    For more details, examples, and contribution guidelines, please refer to the GitHub repository. Feel free to raise issues and suggest new features. Contributions are welcome!

Libraries

flutter_memory_cache