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Create a controller, service, and repository to save user details using Spring Data JPA.
Create a UserController class with appropriate mappings for saving user details.
Create a UserService class with a method to save user details.
Create a UserRepository interface that extends JpaRepository to handle database operations.
Implement the saveUserDetails method in the UserService class to call the save method of the UserRepo...
Template and Reactive Forms in Angular are two ways to handle forms in Angular applications.
Template Forms are based on the traditional HTML forms and are easy to use for simple forms.
Reactive Forms are more flexible and powerful, allowing for complex form validation and dynamic form controls.
Template Forms use two-way data binding, while Reactive Forms use a more reactive approach with observables.
Reactive Forms are r...
I appeared for an interview before Jun 2024, where I was asked the following questions.
Top trending discussions
posted on 9 Nov 2024
I applied via LinkedIn and was interviewed in May 2024. There were 3 interview rounds.
Event loop is a mechanism in programming that allows for asynchronous execution of code by continuously checking for and handling events.
Event loop is commonly used in JavaScript to handle asynchronous operations like setTimeout, setInterval, and AJAX requests.
It works by continuously checking the event queue for any pending events, executing them one by one, and then moving on to the next event.
Event loop helps in pre...
The order of output is fs, process, setTimeout, setInterval, promise.
fs module is synchronous and will output first
process is next in line
setTimeout will be executed after process
setInterval will be executed after setTimeout
promise will be executed last
JavaScript is an interpreted language.
JavaScript is an interpreted language, meaning it is executed line by line at runtime.
There is no separate compilation step in JavaScript like in languages that use compilers.
Examples of interpreted languages include Python, Ruby, and PHP.
Output comparison of for loops using var, let, and bind in JavaScript.
Using var: variable is function-scoped, may lead to unexpected behavior in loops.
Using let: variable is block-scoped, recommended for loop iterations.
Using bind: creates a new function with a specified 'this' value and initial arguments.
Choosing a database involves evaluating data structure, scalability, consistency, and specific use cases.
Understand data structure: Use SQL for structured data (e.g., PostgreSQL) and NoSQL for unstructured data (e.g., MongoDB).
Consider scalability: Choose databases like Cassandra for horizontal scaling in large applications.
Evaluate consistency needs: Use strong consistency databases like MySQL for critical transaction...
I work on coding, debugging, testing, and collaborating with team members. Tech stack decisions are based on project requirements, scalability, performance, and team expertise.
Daily tasks include coding, debugging, testing, and collaborating with team members
Tech stack decisions are based on project requirements, scalability, performance, and team expertise
Consider factors like language compatibility, libraries/framewo...
Design a scalable, real-time document sharing app like Google Docs.
Use websockets for real-time collaboration
Implement version control to track changes
Utilize a distributed database for scalability
Include user authentication and access control
Support offline editing with automatic sync
Utilize cloud storage for scalability, implement image compression techniques, and regularly update image processing libraries.
Utilize cloud storage for scalability
Implement image compression techniques
Regularly update image processing libraries
Implement strategies like versioning, sharding, and caching to manage high I/O and reduce conflicts on the same document.
Use versioning to track changes and allow concurrent edits without conflicts. For example, implement optimistic locking.
Implement sharding to distribute the load across multiple servers, reducing the I/O on a single document.
Utilize caching mechanisms to store frequently accessed data in memory, mini...
I applied via Referral and was interviewed in Aug 2024. There was 1 interview round.
I was asked question on sliding window on finding the largest subarray with all distinct numbers. The interviewer was very helpful.
Questions were crayon box ,the bot and the game and happy neighbourhood for 90 mins
I applied via Instahyre and was interviewed before Mar 2023. There were 3 interview rounds.
DSA, 1 hour with 2 LC medium questions
Designing the low-level design for Dream 11 platform.
Use microservices architecture for scalability and flexibility.
Implement a robust database schema to handle large amounts of user data.
Utilize caching mechanisms to improve performance, especially during peak usage times.
Include authentication and authorization mechanisms to ensure data security.
Design APIs for seamless integration with third-party services.
Implement...
Design HLD for rider management system
Use microservices architecture for scalability and flexibility
Implement user authentication and authorization for security
Include features like ride tracking, payment processing, and feedback system
Utilize databases for storing rider information and ride history
I applied via Instahyre and was interviewed in May 2024. There were 2 interview rounds.
Two medium DSA questions based on strings.
Design a video conferencing platform similar to Google Meet.
Implement real-time video and audio streaming
Include features like screen sharing, chat, and participant management
Ensure scalability to support large number of users
Focus on security and privacy measures
Optimize for low latency and high quality video/audio
Low level design for a chess game including classes, functions, and data structures.
Create classes for pieces (e.g. Pawn, Rook, Bishop) with properties like position and color
Implement functions for moving pieces, checking valid moves, and capturing opponent pieces
Use data structures like 2D arrays to represent the chess board and track piece positions
I applied via Referral and was interviewed in Aug 2024. There was 1 interview round.
Design a Splitwise application for managing shared expenses among friends.
Implement user authentication and authorization for secure access.
Create a user-friendly interface for adding expenses and splitting them among friends.
Develop algorithms for calculating balances and settling debts between users.
Include features for adding comments, attaching receipts, and generating reports.
Consider scalability and performance o...
based on 4 interview experiences
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