Learning topics
Interview questions with worked answers, practical lessons and coding practice.
Apache Kafka
100 interview questions with practical answers covering fundamentals, production operations and architecture.
Kafka FundamentalsConsumers & ReplicationDelivery & Producers 10 topics100 questions & lessons Start learning →Java
Core Java and object-oriented interview preparation from beginner to advanced.
Input and OutputClassObject 11 topics107 questions & lessons Start learning →Spring Boot
Build secure production APIs, batch jobs and resilient microservices.
Spring & Spring Boot Fundamental...Spring AnnotationsBean Management & Lifecycle 13 topics87 questions & lessons Start learning →Data Structures & Algorithms
Topic-wise interview problems selected from your supplied DSA curriculum.
For Loop in ProgrammingMaths, Pattern and RecursionArray and String 14 topics143 questions & lessons Start learning →Machine Learning & AI
Machine learning interview preparation in depth: how models learn, regression, classification, evaluation and production concerns, with mathematics and Python code.
ML Interview Part 1: Foundations...ML Interview Part 2: Learning Ty...ML Interview Part 3: Gradient De... 3 topics21 questions & lessons Start learning →Backend Concepts in Depth
Tokens, authorization, roles, middleware, sessions, cookies, exceptions, REST, GraphQL, cURL, Swagger, service container, Docker, queues, batches, cron, eager loading and Kafka, explained with banking, e-commerce and payment examples in Laravel, Spring Boot, React and MySQL.
Tokens, Authentication, Authoriz...Middleware, Filters & Intercepto...Sessions & Cookies 10 topics62 questions & lessons Start learning →PHP & Laravel
Complete PHP and Laravel preparation built around a production job portal.
Laravel 5-Year Interview (Q1–25)Laravel 5-Year Interview (Q26–50...Laravel Foundations: Practical L... 16 topics243 questions & lessons Start learning →React
Modern React fundamentals, state management, performance and frontend architecture.
React FundamentalsHooksState Management 5 topics25 questions & lessons Start learning →System Design Case Studies
How real Indian and global products are built: payment gateways, UPI apps, stock broking, core banking, ride hailing, food delivery and quick commerce, with requirements, scale, architecture, data models, flows and failure handling.
Payments, Broking and BankingRide Hailing, Food Delivery and... 2 topics7 questions & lessons Start learning →SQL
SQL interview questions, practical queries and real-world transaction case studies.
SQL FundamentalsQueries and AggregationNULL Values and Joins 14 topics248 questions & lessons Start learning →