Share State Across Dart Isolates Without Losing Your Mind: Enter shared_map

6.3 relevance

Dart concurrency package is actionable but not core to the reader's interests.

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Why It Matters

For a solutions architect building Flutter or Dart backend apps with background isolates, shared_map removes a major pain point in concurrency, reducing boilerplate and improving performance for shared caches and state.

Key Takeaways

Adopt shared_map to share state across Dart isolates via a simple async Map API and reference pattern instead of hand-rolling message-passing or serializing data.

Share State Across Dart Isolates Without Losing Your Mind: Enter shared_map

Summary

Dart isolates' share-nothing model forces costly serialization or brittle message-passing for shared state. Graciliano M. Passos' shared_map package offers a zero-dependency, 160/160 pub point solution using a SharedStore and .sharedReference() pattern to transparently synchronize async Map operations across isolates, eliminating manual port plumbing.

Author

Randal L. Schwartz