2021-06-10 08:47:05 +00:00
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# angel3_file_service
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[](https://pub.dartlang.org/packages/angel3_file_service)
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[](https://dart.dev/null-safety)
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[](https://gitter.im/angel_dart/discussion)
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[](https://github.com/dukefirehawk/angel/tree/angel3/packages/file_service/LICENSE)
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2018-07-12 20:29:16 +00:00
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2017-06-13 16:55:07 +00:00
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Angel service that persists data to a file on disk, stored as a JSON list. It uses a simple
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mutex to prevent race conditions, and caches contents in memory until changes
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are made.
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The file will be created on read/write, if it does not already exist.
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This package is useful in development, as it prevents you from having to install
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an external database to run your server.
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When running a multi-threaded server, there is no guarantee that file operations
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will be mutually excluded. Thus, try to only use this one a single-threaded server
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if possible, or one with very low load.
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While not necessarily *slow*, this package makes no promises about performance.
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# Usage
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```dart
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configureServer(Angel app) async {
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// Just like a normal service
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2017-12-21 06:37:03 +00:00
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app.use(
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'/api/todos',
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new JsonFileService(
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const LocalFileSystem().file('todos_db.json')
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),
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);
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2017-06-13 16:55:07 +00:00
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}
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```
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