Hands-On Design Patterns with C# and .NET Core

.Net Core service lifetimes

A fundamental concept to understand when working with .Net Core's DI, is service lifetimes. A service lifetime defines how a dependency is managed in regards to how often it is created. As an illustration of this process, think of DI as managing a container of dependencies. Dependency is just a class that the DI knows about, because the class was registered with it. For .Net Core's DI, this is done with the following three methods of IServiceCollection:

• AddTransient<TService, TImplementation>()
• AddScoped<TService, TImplementation>()
• AddSingleton<TService, TImplementation>()

The IServiceCollection interface is a collection of registered service descriptions, basically containing the dependency, and when the DI ...