Isolate Guide - Flint Dart

Isolate

Use isolates to run heavy work off the main request thread. Flint provides IsolateTask for single jobs and IsolateTaskQueue for batching.

Single Task

CodeBlock dart

class ReportJob extends IsolateTask {
  @override
  Future performTask() async {
    // heavy work here
    return 'done';
  }
}

await ReportJob().perform(
  onDone: (result) => Log.debug('Result: $result'),
  onError: (err) => Log.debug('Error: $err'),
);

Queue Multiple Tasks

CodeBlock dart

final tasks = [
  ReportJob(),
  ReportJob(),
];

await IsolateTaskQueue.scheduleTasks(
  tasks,
  onDone: (task, result) => Log.debug('Done: $result'),
  onError: (task, err) => Log.debug('Error: $err'),
);

CLI Scaffold

Generate a new isolate task with the CLI:

CodeBlock bash

flint --make-isolate ReportJob