background-services
Background Services in ASP.NET Core
Rationale
Background services are essential for offloading work from the request pipeline, processing queues, and handling scheduled tasks. Poorly implemented background services can lead to data loss, orphaned jobs, and resource leaks. These patterns ensure reliable, observable, and gracefully degrading background processing in production applications.
BackgroundService vs IHostedService
| Feature | BackgroundService |
IHostedService |
|---|---|---|
| Purpose | Long-running loop or continuous work | Startup/shutdown hooks |
| Methods | Override ExecuteAsync |
Implement StartAsync + StopAsync |
| Lifetime | Runs until cancellation or host shutdown | StartAsync runs at startup, StopAsync at shutdown |
| Use when | Polling queues, processing streams, periodic jobs | Database migrations, cache warming, resource cleanup |
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