System Design: • How would you design a distributed caching system that scales globally for millions of users? • Explain how you would design a URL shortening service like Bitly, focusing on scalability and fault tolerance. • Design a payment gateway system with high availability and low latency. 2. Algorithms & Data Structures: • Given a stream of real-time stock prices, how would you calculate the median efficiently at any point? • Explain how you would implement a least recently used (LRU) cache from scratch. • Write a function to find the shortest path in a weighted graph with negative edges. 3. Coding: • Given a matrix where each cell represents the cost to enter, find the minimum cost path from the top-left to the bottom-right corner. • Implement a thread-safe singleton pattern in Java. • Write code to detect if a linked list has a cycle, and if so, find the start of the cycle. 4. Database: • Explain the differences between ACID and BASE principles. When would you prioritize one over the other? • How would you optimize a query that involves millions of rows and joins across multiple tables? • Design a schema for an e-commerce website where product search is extremely fast. 5. Cloud & DevOps: • Explain the CAP theorem and its implications in designing a distributed database. • How would you deploy and scale a microservices-based application on Kubernetes or OpenShift? • What is the difference between serverless architecture and container-based architecture? When would you use each?

It consists of 2 round as I am an Immediate Joiner. I think for candidate with high notice period they take 4 round. For me 1st round is mostly focused on DSA and 2nd round is client round.