IG Infotech India Java Full Stack Developer Interview Questions and Answers

Middleware in .NET can be implemented using the 'UseMiddleware' method in the Startup class.

• Use the 'UseMiddleware' method in the Configure method of the Startup class to add middleware in the request pipeline.

• Create a custom middleware class that implements the 'IMiddleware' interface.

• Register the custom middleware class in the ConfigureServices method of the Startup class.

Common exceptions encountered in middleware include timeout errors, connection errors, and invalid input errors.

• Timeout errors occur when a request takes too long to process.

• Connection errors happen when there is a problem connecting to a database or external service.

• Invalid input errors occur when the data provided does not meet the expected format or criteria.

Change detection in Angular is the process of detecting changes in the application state and updating the view accordingly.

• Angular uses change detection to keep the UI in sync with the application state.

• It compares the current state of the application with the previous state to determine what has changed.

• If a change is detected, Angular updates the view to reflect the new state.

• Change detection can be triggered by user...read more

Subject in Angular is used for multicasting observables to multiple subscribers.

• Subject is a type of Observable that allows values to be multicasted to multiple Observers.

• It acts as both an Observable and an Observer.

• Subjects are hot Observables, meaning they start emitting values immediately upon creation.

• Example: const subject = new Subject(); subject.next(1); subject.subscribe(value => console.log(value)); // Out