I am writing Kubernetes operator in golang and I am new to golang. I have few questions based on best practices:

1) The operator I am building can serve multiple instances of my application 2) Each application instance is independent of each other 3) Application is mostly stateful

   type myApp struct {
            name  string
     }
    
    // MyAppReconciler reconciles a MyApp object
    type MyAppReconciler struct {
            client.Client
            Log               logr.Logger
            Scheme            *runtime.Scheme
            kubeClient        kubernetes.Interface
            kubeConfig        clientcmd.ClientConfig
            instance          *appV1.MyApp
            addNewApp        []myApp
            addSHState        bool
            addSemAcuireMsg   string
    }
    
    // ConfigurationProvider wraps information about the account owner
    
    var myAppSem = semaphore.NewWeighted(1)
    var App1Sem = semaphore.NewWeighted(1)

If I declare a global variables like myAppSem, they become operator wise resource i.e. all my App instances ( like app1 inst, appnst2 CR ) access the same semaphores. Also, assign values to MyAppReconciler such as addNewApp then these values are available to all the same CR so technically if I run multiple app instances then operator mess up the env.

Is there a way to declare and define the struct which is at per CR resource. If I declare struct under following then I need to pass the struct to all the functions but I want in that app instance it must maintains its copy and each CR must have its own copy.

func (r *MyAppReconciler) Reconcile(req ctrl.Request) (ctrl.Result, error) {
        // _ = context.Background()
        _ = r.Log.WithValues("Instance.Namespace", req.NamespacedName)

        // your logic here


}