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Q&A How to create fire and forget tasks Q&A in ASP.NET Core with dependency injection support?

One of the legacy applications our team manages contained the following pattern (in the controller): // initialization private readonly IServiceScopeFactory _serviceScopeFactory; public FooCon...

1 answer  ·  posted 2y ago by Alexei‭  ·  last activity 2y ago by Alexei‭

#2: Post edited by user avatar Alexei‭ · 2022-01-10T16:42:09Z (over 2 years ago)
minor formatting fix
  • One of the legacy applications our team manages contained the following pattern (in the controller):
  • ```
  • // initialization
  • private readonly IServiceScopeFactory _serviceScopeFactory;
  • public FooController(IServiceScopeFactory serviceScopeFactory)
  • {
  • _serviceScopeFactory = serviceScopeFactory;
  • }
  • ```
  • ```
  • // IServiceScopeFactory was polluting the application services
  • public IActionResult Foo()
  • {
  • Task.Run(() => _fooService.DoFoo(_serviceScopeFactory));
  • return Ok();
  • }
  • ```
  • The main purpose was to allow for fire-and-forget tasks because some of them could be quite long and the client should not wait for them to complete.
  • I guess that this was required to still benefit from DI since all application logic relies on it.
  • I have found this [SO question](https://stackoverflow.com/questions/49318224/c-sharp-asp-net-core-fire-and-forget) dealing and [this answer](https://stackoverflow.com/questions/49318224/c-sharp-asp-net-core-fire-and-forget) seems to do the trick, but votes = 0 suggests that was not found particularly useful (despite the 10K views).
  • **Is there a quick way to allow for fire-and-forget tasks with DI support? **
  • One of the legacy applications our team manages contained the following pattern (in the controller):
  • ```
  • // initialization
  • private readonly IServiceScopeFactory _serviceScopeFactory;
  • public FooController(IServiceScopeFactory serviceScopeFactory)
  • {
  • _serviceScopeFactory = serviceScopeFactory;
  • }
  • ```
  • ```
  • // IServiceScopeFactory was polluting the application services
  • public IActionResult Foo()
  • {
  • Task.Run(() => _fooService.DoFoo(_serviceScopeFactory));
  • return Ok();
  • }
  • ```
  • The main purpose was to allow for fire-and-forget tasks because some of them could be quite long and the client should not wait for them to complete.
  • I guess that this was required to still benefit from DI since all application logic relies on it.
  • I have found this [SO question](https://stackoverflow.com/questions/49318224/c-sharp-asp-net-core-fire-and-forget) dealing and [this answer](https://stackoverflow.com/questions/49318224/c-sharp-asp-net-core-fire-and-forget) seems to do the trick, but votes = 0 suggests that was not found particularly useful (despite the 10K views).
  • **Is there a quick way to allow for fire-and-forget tasks with DI support?**
#1: Initial revision by user avatar Alexei‭ · 2022-01-10T16:34:12Z (over 2 years ago)
How to create fire and forget tasks Q&A in ASP.NET Core with dependency injection support?
One of the legacy applications our team manages contained the following pattern (in the controller):

```
// initialization
private readonly IServiceScopeFactory _serviceScopeFactory;

public FooController(IServiceScopeFactory serviceScopeFactory)
{
    _serviceScopeFactory = serviceScopeFactory;
}
```

```
// IServiceScopeFactory was polluting the application services
public IActionResult Foo()
{
    Task.Run(() => _fooService.DoFoo(_serviceScopeFactory));
    return Ok();
}

```

The main purpose was to allow for fire-and-forget tasks because some of them could be quite long and the client should not wait for them to complete.

I guess that this was required to still benefit from DI since all application logic relies on it.

I have found this [SO question](https://stackoverflow.com/questions/49318224/c-sharp-asp-net-core-fire-and-forget) dealing and [this answer](https://stackoverflow.com/questions/49318224/c-sharp-asp-net-core-fire-and-forget) seems to do the trick, but votes = 0 suggests that was not found particularly useful (despite the 10K views).

**Is there a quick way to allow for fire-and-forget tasks with DI support? **