mPokket Interview Questions and Answers for Experienced

Q1. SpringBoot And Java basics Question
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Q2. Implement LRU Cache
Ans. 
LRU Cache is a data structure that stores the most recently used items, discarding the least recently used items when full.
• Use a combination of a doubly linked list and a hashmap to implement LRU Cache efficiently.

• Keep track of the most recently used item by moving it to the front of the linked list.

• When the cache is full, remove the least recently used item from the end of the linked list and the hashmap.

• Ensure consta...read more
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Q1. DB Indexing How it works
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DB indexing is a technique used to improve the performance of database queries by creating data structures that allow for faster data retrieval.
• Indexes are created on specific columns in a database table to speed up data retrieval.

• When a query is executed, the database engine uses the index to quickly locate the rows that match the query criteria.

• Types of indexes include clustered, non-clustered, unique, and composite ...read more
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Q2. Given a Linked List Arrange it into Positive and Negative Alternatively
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Arrange a Linked List into Positive and Negative Nodes Alternately
• Traverse the Linked List and separate positive and negative nodes into two separate lists

• Merge the two lists alternately to form the final arrangement

• Ensure to handle cases where one list is longer than the other
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Q1. How to Handle Tech Debt
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Tech debt should be managed by prioritizing, tracking, and addressing it regularly.
• Prioritize tech debt based on impact on product, codebase, and team productivity.

• Track tech debt using tools like Jira or Trello to ensure visibility and accountability.

• Address tech debt incrementally by allocating time in sprints or dedicated tech debt cleanup sprints.

• Involve the team in identifying and addressing tech debt to foster a ...read more
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Q2. Team Handling Experience and Cases
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I have 5 years of experience leading technical teams, handling team dynamics, delegating tasks, and resolving conflicts.
• Led a team of 10 developers in a software development project, ensuring timely delivery and quality output

• Managed team members with diverse skill sets, assigning tasks based on individual strengths and weaknesses

• Resolved conflicts within the team by facilitating open communication and finding mutually...read more
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Q1. Introduction and Past Experience
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Q2. Team Handling Experience
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Q3. Tech Stack which is currently Using
Ans. 
Currently using a tech stack consisting of Java, Spring Boot, React, and PostgreSQL.
• Java

• Spring Boot

• React

• PostgreSQL
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SQL questions were asked

Q1. Write a high level design of the given app feature.
Ans. 
Design a feature for an app
• Identify the purpose and goals of the feature

• Define the user flow and interactions

• Consider the technical requirements and constraints

• Design the UI/UX

• Plan the data model and storage

• Consider scalability and performance

• Implement and test the feature
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Q1. Difference between Authentication and Authorisation. What Coroutine makes it different than threads. Small DS algorithm. Practical usage of viewmodel and coroutine. What is livedata.
Ans. 
Authentication is the process of verifying the identity of a user, while authorization is the process of granting access to specific resources.
• Authentication ensures that the user is who they claim to be, usually through credentials like username and password.

• Authorization determines what actions a user is allowed to perform on a system or resource.

• Coroutines are lightweight threads that allow for asynchronous programm...read more
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Q1. About your self?
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Q2. Congratulations skills?
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Q3. Communication skills
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