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Q&A Which abstraction should I choose for background services and why?

Which concept is best for managed background services? 1. RunAsync(CancellationToken): interface IWorker { Task RunAsync(CancellationToken cancellationToken = default); } ... IWorker worker =...

1 answer · posted 4y ago by Kir_Antipov‭ · last activity 4y ago by Alexei‭

Question c# software-practices async-await .net

#4: Post edited by

Moshi‭ · 2020-09-12T19:54:12Z (about 4 years ago)

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Which concept is best for managed background services?

### 1. `RunAsync(CancellationToken)`:

```csharp
interface IWorker
{
    Task RunAsync(CancellationToken cancellationToken = default);
}

...

IWorker worker = ...;
var source = new CancellationTokenSource();
_ = worker.RunAsync(source.Token);

// And when it's time to shutdown the worker:
source.Cancel();
```

vs

### 2. `RunAsync` and `StopAsync`

```csharp
interface IWorker
{
    Task RunAsync();
    Task StopAsync();
}

...

IWorker worker = ...;
_ = worker.RunAsync();

// And when it's time to shutdown the worker:
await worker.StopAsync();
```

#3: Post edited by

Kir_Antipov‭ · 2020-09-12T19:47:22Z (about 4 years ago)

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Which concept is best for managed background services?
~~1. `RunAsync(CancellationToken)`:~~
```csharp
interface IWorker
{
Task RunAsync(CancellationToken cancellationToken = default);
}
...
IWorker worker = ...;
var source = new CancellationTokenSource();
_ = worker.RunAsync(source.Token);
// And when it's time to shutdown the worker:
source.Cancel();
```
vs
~~2. `RunAsync` and `StopAsync`~~
```csharp
interface IWorker
{
Task RunAsync();
Task StopAsync();
}
...
IWorker worker = ...;
_ = worker.RunAsync();
// And when it's time to shutdown the worker:
await worker.StopAsync();
```

Which concept is best for managed background services?
### 1. `RunAsync(CancellationToken)`:
```csharp
interface IWorker
{
Task RunAsync(CancellationToken cancellationToken = default);
}
...
IWorker worker = ...;
var source = new CancellationTokenSource();
_ = worker.RunAsync(source.Token);
// And when it's time to shutdown the worker:
source.Cancel();
```
vs
### 2. `RunAsync` and `StopAsync`
```csharp
interface IWorker
{
Task RunAsync();
Task StopAsync();
}
...
IWorker worker = ...;
_ = worker.RunAsync();
// And when it's time to shutdown the worker:
await worker.StopAsync();
```

#2: Post edited by

Kir_Antipov‭ · 2020-09-12T19:47:02Z (about 4 years ago)

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Which concept is best for managed background services?
~~1) `RunAsync(CancellationToken)`:~~
```csharp
interface IWorker
{
Task RunAsync(CancellationToken cancellationToken = default);
}
...
IWorker worker = ...;
var source = new CancellationTokenSource();
_ = worker.RunAsync(source.Token);
// And when it's time to shutdown the worker:
source.Cancel();
```
vs
~~2) `RunAsync` and `StopAsync`~~
```csharp
interface IWorker
{
Task RunAsync();
Task StopAsync();
}
...
IWorker worker = ...;
_ = worker.RunAsync();
// And when it's time to shutdown the worker:
await worker.StopAsync();
```

Which concept is best for managed background services?
1. `RunAsync(CancellationToken)`:
```csharp
interface IWorker
{
Task RunAsync(CancellationToken cancellationToken = default);
}
...
IWorker worker = ...;
var source = new CancellationTokenSource();
_ = worker.RunAsync(source.Token);
// And when it's time to shutdown the worker:
source.Cancel();
```
vs
2. `RunAsync` and `StopAsync`
```csharp
interface IWorker
{
Task RunAsync();
Task StopAsync();
}
...
IWorker worker = ...;
_ = worker.RunAsync();
// And when it's time to shutdown the worker:
await worker.StopAsync();
```

#1: Initial revision by

Kir_Antipov‭ · 2020-09-12T19:46:03Z (about 4 years ago)

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Which abstraction should I choose for background services and why?

Which concept is best for managed background services?

1) `RunAsync(CancellationToken)`:

```csharp
interface IWorker
{
    Task RunAsync(CancellationToken cancellationToken = default);
}

...

IWorker worker = ...;
var source = new CancellationTokenSource();
_ = worker.RunAsync(source.Token);

// And when it's time to shutdown the worker:
source.Cancel();
```

vs

2) `RunAsync` and `StopAsync`

```csharp
interface IWorker
{
    Task RunAsync();
    Task StopAsync();
}

...

IWorker worker = ...;
_ = worker.RunAsync();

// And when it's time to shutdown the worker:
await worker.StopAsync();
```

c# async-await .net

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