/// <summary>
/// Awaiting each IO bound operation in sequence is wasting time when the resource is under-utilised
/// </summary>
/// <returns></returns>
public Task <TimeSpan> GetMany_AwaitingEach_Bad()
{
var resourceGetter = new SomeAsyncResource();
return(TimedExecution(async() =>
{
for (int i = 0; i < iterations; i++)
{
await resourceGetter.GetStringContentAsync().ConfigureAwait(false);
}
}
));
}
/// <summary>
/// Fire off multiple requests and await IO completion in parallel.
/// However be careful not to overload the remote resource or the local client machine (each tasks uses memory, disk/network etc.)
/// Considering batching.
/// </summary>
/// <returns></returns>
public Task <TimeSpan> GetMany_AwaitingAll_IOBound_Good()
{
var resourceGetter = new SomeAsyncResource();
return(TimedExecution(async() =>
{
var tasks = new List <Task <string> >();
for (int i = 0; i < iterations; i++)
{
tasks.Add(resourceGetter.GetStringContentAsync());
}
await Task.WhenAll(tasks).ConfigureAwait(false);
}
));
}
