Using finalizers is not a good practice to use in .NET Core applications. Objects that use finalizers stay in memory longer and ultimately affect the application's performance.
Objects that are not required by the application at a particular point in time stay in the memory so that their Finalizer method can be called. For example, if the object is considered dead by the GC in generation 0, it will always survive in generation 1.
In .NET Core, CLR maintains a separate thread to run the Finalizer method. All the objects that contain the Finalizer method are placed into the finalization queue. Any object that is no longer required by the application is placed in the F-Reachable queue, which is then executed by the dedicated finalizer thread.
The following diagram shows an object1 object that contains a Finalizer method. The Finalizer method is placed in...
