Terraform is an open-source infrastructure as code (IaC) tool created by HashiCorp. It allows users to define and provision data center infrastructure using a declarative configuration language known as HashiCorp Configuration Language…
Palindrome Problems Summary
Palindrome problems 1. Basic algorithm to check palindrome This section presents methods for checking if a string is a palindrome: 1.1 Check if a substring is palindrome at i and expand it….
Combinational Sum
Given an array of distinct integers candidates and a target integer target, return a list of all unique combinations of candidates where the chosen numbers sum to target. You may return the…
Data Placement Strategies in Distributed System
In distributed systems, data placement is crucial for balancing load, optimizing performance, and ensuring fault tolerance. Besides consistent hashing, which is widely used for its uniformity and minimal reshuffling of data upon…
Models to Manage and Coordinate Components
In a distributed system, there are different architectural models used to manage and coordinate the multiple components that form the system. Here, we’ll discuss three common models: Clustering Management, Peer-to-Peer (P2P), and…
Database Master -Slave Replication
Database master-slave replication is a common method for ensuring data redundancy, load balancing, and high availability in database management systems. Here’s a simplified overview of how it works: The exact implementation details…
Make Each Payment Unique
Making online payments unique and idempotent is crucial to ensure that each transaction is processed only once and to prevent duplicate charges. Here are some strategies to achieve this: By combining these…
Race Condition
A race condition is a type of computing problem that occurs in software when two or more processes access shared data at the same time and at least one of them modifies…
System Design – Designing a “Like” Button
Designing a “Like” button system capable of handling a high volume of likes (increment operations) from individual users, while ensuring thread safety and real-time updates, requires a robust and scalable architecture. Let’s…
Compare Kafka with RabbitMQ
Apache Kafka and RabbitMQ are both popular message brokers, but they have different architectures and are designed for different use cases. Here are some key differences: 1. **Architecture**: – **Kafka**: Designed as…