static async Task DoThrottledSampleWork(int concurrencyLevel)
{
var engine = new ThrottledService();
const int CONCURRENCY_LEVEL = 5;
int nextIndex = 0;
var throttledTasks = new List <Task <string> >();
while (nextIndex < CONCURRENCY_LEVEL && nextIndex < 20)
{
throttledTasks.Add(engine.ProducePithySaying());
nextIndex++;
}
while (throttledTasks.Count > 0)
{
try {
Task <string> finishedTask = await Task.WhenAny(throttledTasks);
throttledTasks.Remove(finishedTask);
Console.WriteLine(await finishedTask);
} catch (Exception exc) {
Console.WriteLine(exc.ToString());
}
if (nextIndex < 20)
{
throttledTasks.Add(engine.ProducePithySaying());
nextIndex++;
}
}
}
static async Task DoSampleWork()
{
var engine = new ThrottledService();
var allTasks = new List <Task <string> >();
for (int i = 0; i < 20; i++)
{
allTasks.Add(engine.ProducePithySaying());
await Task.Delay(250);
}
foreach (var task in allTasks)
{
try {
Console.WriteLine(await task);
} catch (InvalidOperationException) {
Console.WriteLine("This task failed");
}
}
}
