Aka Consultants Interview Questions and Answers

Redux is used for managing state in complex applications. It provides a centralized store and predictable state updates.

• Redux helps in managing state in large applications with multiple components

• It provides a centralized store for all the application state

• Redux allows for predictable state updates through actions and reducers

• It enables easy debugging and time-travel debugging with Redux DevTools

• Redux can be used with React, Angular, Vue, and other frameworks

Use Spring Data JPA's Pageable interface to add pagination in queries.

• Use Pageable interface in repository method signature

• Pass PageRequest object with page number, size, and sorting criteria

• Example: public List findAllUsers(Pageable pageable);

Django applies migrations to the database using the 'manage.py migrate' command.

• Django tracks changes to models and generates migration files accordingly.

• The 'manage.py makemigrations' command creates migration files based on model changes.

• The 'manage.py migrate' command applies the generated migration files to the database.

• Migrations help keep the database schema in sync with the changes in Django models.

JS hoisting is a mechanism where variable and function declarations are moved to the top of their scope.

• Variable declarations are hoisted but not their values

• Function declarations are fully hoisted

• Let and const declarations are not hoisted

Custom Django admin commands can be written to perform specific tasks in the Django admin interface.

• Create a management/commands directory inside your Django app directory

• Create a Python file for your custom command inside the management/commands directory

• Define a class that extends BaseCommand and implement the handle method to execute the command logic

• Register the custom command in the Django admin interface by adding it to the INSTALLED_APPS list in settings.py

A palindrome function checks if a given string reads the same forwards and backwards.

• A palindrome function typically involves reversing the input string and comparing it to the original string.

• Examples: 'racecar' is a palindrome, 'hello' is not a palindrome.

• Common languages for implementing a palindrome function include Python, Java, and C++.