ASP.NET Best Practices?

[Elijah Lopez]

Is it better to create a new postmark client for each controller, or should we be using a Singleton or something like that and create only one client?

For reference, Microsoft tutorials for MongoDB creates a service for a collection and uses that service/singleton to insert/get.

[Elijah Lopez]

// Program.cs
builder.Services.AddSingleton(new PostmarkClient(builder.Configuration["PostmarkServerToken"]));
// MyController.cs
    public MyController(PostmarkClient postmarkClient) {
        // Initialize Postmark client
        _postmarkClient = postmarkClient;
}

[MariuszTrybus]

Postmark-dotnet internally uses a static instance of HttpClient that is shared by all postmark clients - you can use either approach.