Razorpay Interview Questions, Process, and Tips

Design a high-performance in-memory cache system for storing and retrieving data efficiently.

• Use a hash table or a key-value store to store data in memory

• Implement caching strategies like LRU (Least Recently Used) or LFU (Least Frequently Used) to manage cache eviction

• Consider using a distributed cache for scalability and fault tolerance

• Optimize cache size and expiration policies based on the application's data access

High Level Design (HLD) round with system design involves designing the overall architecture of a system.

• Understand the requirements and constraints of the system

• Identify the key components and their interactions

• Design the data flow and communication between components

• Consider scalability, reliability, and performance

• Create diagrams to visualize the architecture, such as UML diagrams or flowcharts

Design a scheduler for managing tasks and resources efficiently.

• Define the tasks to be scheduled and their priority levels

• Implement a scheduling algorithm like Round Robin, First Come First Serve, or Priority Scheduling

• Allocate resources based on task requirements and availability

• Handle task dependencies and deadlines to ensure timely execution