Async guidance and best practices

Cosmin_Popescu · septembrie 29, 2019, 7:13pm

davidfowl/AspNetCoreDiagnosticScenarios/blob/master/AsyncGuidance.md

# Table of contents
 - [Asynchronous Programming](#asynchronous-programming)
   - [Asynchrony is viral](#asynchrony-is-viral)
   - [Async void](#async-void)
   - [Prefer Task.FromResult over Task.Run for pre-computed or trivially computed data](#prefer-taskfromresult-over-taskrun-for-pre-computed-or-trivially-computed-data)
   - [Avoid using Task.Run for long running work that blocks the thread](#avoid-using-taskrun-for-long-running-work-that-blocks-the-thread)
   - [Avoid using Task.Result and Task.Wait](#avoid-using-taskresult-and-taskwait)
   - [Prefer await over ContinueWith](#prefer-await-over-continuewith)
   - [Always create TaskCompletionSource\<T\> with TaskCreationOptions.RunContinuationsAsynchronously](#always-create-taskcompletionsourcet-with-taskcreationoptionsruncontinuationsasynchronously)
   - [Always dispose CancellationTokenSource(s) used for timeouts](#always-dispose-cancellationtokensources-used-for-timeouts)
   - [Always flow CancellationToken(s) to APIs that take a CancellationToken](#always-flow-cancellationtokens-to-apis-that-take-a-cancellationtoken)
   - [Cancelling uncancellable operations](#cancelling-uncancellable-operations)
   - [Always call FlushAsync on StreamWriter(s) or Stream(s) before calling Dispose](#always-call-flushasync-on-streamwriters-or-streams-before-calling-dispose)
   - [Prefer async/await over directly returning Task](#prefer-asyncawait-over-directly-returning-task)
   - [ConfigureAwait](#configureawait)
 - [Scenarios](#scenarios)
   - [Timer callbacks](#timer-callbacks)
   - [Implicit async void delegates](#implicit-async-void-delegates)
   - [ConcurrentDictionary.GetOrAdd](#concurrentdictionarygetoradd)
   - [Constructors](#constructors)

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Desi pattern-ul async await este destul de usor de implementat in C#, sunt ceva best practice-uride urmat.

Si nu sunt neaparat greu de implementat.