Magnit Global Senior Software Engineer Interview Questions and Answers

SOLID principles help in creating maintainable, scalable, and flexible software.

• SOLID principles help in creating software that is easier to maintain and extend.

• Single Responsibility Principle (SRP) ensures that a class has only one reason to change, leading to more modular and cohesive code.

• Open/Closed Principle (OCP) states that a class should be open for extension but closed for modification, allowing for easy chang...read more

Singleton design pattern ensures a class has only one instance and provides a global point of access to it.

• Create a private static instance of the class within the class itself.

• Provide a public static method to access the instance.

• Ensure the constructor of the class is private to prevent instantiation from outside the class.

• Example: Singleton pattern is commonly used in database connections to ensure only one connectio

Dependency injection is a design pattern where components are provided with their dependencies rather than creating them internally.

• Dependency injection helps in achieving loose coupling between components.

• It makes components easier to test by allowing for easier mocking of dependencies.

• Use cases include injecting database connections, logging services, and external API clients into components.

Debugging a published dll involves using tools like Visual Studio debugger and logging mechanisms.

• Use Visual Studio debugger to attach to the process using the published dll

• Set breakpoints in the code to pause execution and inspect variables

• Use logging mechanisms to track the flow of execution and identify issues

• Check for any exceptions or errors thrown by the dll

Data seeding in Entity Framework involves pre-populating database tables with initial data. Mapping tables with entities involves defining relationships between database tables and entity classes.

• Data seeding in Entity Framework can be done using the 'Seed' method in the 'Configuration' class of the DbContext.

• To map tables with entities, use data annotations or Fluent API to define relationships between entities and da...read more

Reverse a string to check if it is a palindrome.

• Create a function that takes a string as input

• Reverse the string using built-in functions or manually

• Compare the reversed string with the original string to check if it is a palindrome

Design a zepto delivery system for efficient and fast delivery of small packages.

• Utilize drones for quick and efficient delivery

• Implement a centralized hub for package sorting and distribution

• Use GPS tracking for real-time package monitoring

• Optimize routes for faster delivery times

• Ensure secure and reliable delivery process

Pure pipes do not have any side effects and always return the same output for the same input, while impure pipes can have side effects and may not return the same output for the same input.

• Pure pipes are stateless and deterministic.

• Impure pipes can have side effects like modifying global variables or making network requests.

• Examples of pure pipes include filters in Angular, while examples of impure pipes include async

Writing trigger logic involves defining actions to be taken when a certain event occurs in a database.

• Identify the event that will trigger the logic

• Define the actions to be taken when the event occurs

• Consider any conditions or constraints that need to be met for the trigger to fire

A Batch Class is used in Salesforce to process records in batches.

• Batch classes are used to process large amounts of data in Salesforce.

• They are implemented by implementing the Database.Batchable interface.

• Batch classes have three main methods: start, execute, and finish.

• Example: public class MyBatchClass implements Database.Batchable { // implementation }