dotnet 核心中的多个 API 调用

Question

I am using dotnet core c#. Here i need to call multiple API's based on which I have send email or SMS. PFB the structure.

function SendEmailOrSMS(){
    List user = new List;
    callAPI1(userid) --> to get email id or phone number
    callAPI2(response of API 1) --> to trigger sms
    UpdateResponse() --> DB function
}

For every user I have to call this method's and API to trigger SMS or email. Now for 1000 user it takes 15 mins. I need to trigger for 3.5 mil users.

If I go with 1000 user it takes almost a month to trigger email or SMS where in I need to trigger in a day.

Appreciate your help in advance.

Answer 1

Does API1 or API2 expose a method for batch processing? If so, you won't need to call it n times, but only once (or multiple times, but still not n times).

Regardless, this processing can be done in parallel in different threads. This can be achieved by using the Parallel.ForEach() method, or by managing the Task s by yourself. (The latter is a trickier approach, but can be more customizable.) This way, multiple users could be processed at the same time, so the processing time would decrease a lot.