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QuestionQuestion About Async Pin
Kevin Marois29-Sep-21 11:21
professionalKevin Marois29-Sep-21 11:21 
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Pete O'Hanlon29-Sep-21 21:22
mvePete O'Hanlon29-Sep-21 21:22 
GeneralRe: Question About Async Pin
Kevin Marois30-Sep-21 5:24
professionalKevin Marois30-Sep-21 5:24 
GeneralRe: Question About Async Pin
Richard Deeming30-Sep-21 5:41
mveRichard Deeming30-Sep-21 5:41 
GeneralRe: Question About Async Pin
Kevin Marois30-Sep-21 5:48
professionalKevin Marois30-Sep-21 5:48 
GeneralRe: Question About Async Pin
Richard Deeming30-Sep-21 6:05
mveRichard Deeming30-Sep-21 6:05 
GeneralRe: Question About Async Pin
Kevin Marois30-Sep-21 6:20
professionalKevin Marois30-Sep-21 6:20 
AnswerRe: Question About Async Pin
Richard Deeming29-Sep-21 22:54
mveRichard Deeming29-Sep-21 22:54 
async is not really about multi-threading; it's about not blocking the current thread waiting for an external resource.

In your example, there are two external resources - the API, and the database.

The front-end call needs to use an async call to the API, since it's a network request which could take a while to run. You don't want your UI thread blocked whilst it's waiting for that request to complete.

The controller methods need to use async calls to the database, since that's potentially another network call, plus disk access, plus the time it takes the DBMS to parse and execute the query.

Think of it like a car trip. In the non-async world, your kids are in the back seat constantly asking "Are we there yet?" over and over again until you arrive. In the async world, your kids sit quietly watching a film on their phone, and wait for you to tell them once you've arrived. One of those options is extremely irritating. Smile | :)



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GeneralRe: Question About Async Pin
Kevin Marois30-Sep-21 5:23
professionalKevin Marois30-Sep-21 5:23 
QuestionMakeGenericType/CreateInstance Object to underlying Type at run-time: why this works is driving me crazy Pin
BillWoodruff28-Sep-21 6:45
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Richard Deeming28-Sep-21 7:20
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OriginalGriff28-Sep-21 11:40
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GeneralRe: MakeGenericType/CreateInstance Object to underlying Type at run-time: why this works is driving me crazy Pin
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Questionled matrix display Pin
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QuestionC# 8 nullable reference question / conundrum Pin
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QuestionConvering time representation format Pin
Alex Dunlop22-Sep-21 0:26
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Richard Deeming22-Sep-21 2:37
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