Blockchain technology has gained significant popularity, particularly after the success of Bitcoin. Many people believe that blockchain is merely a distributed ledger or database, but this is a misconception. Blockchain is much more than just a decentralized database; it is a unique data structure designed to solve critical issues in digital transactions, particularly in cryptocurrency.

To understand the importance of blockchain, let's explore its necessity through a short story.

What is a Blockchain Node?​

A blockchain node is a crucial component of any blockchain network. It is a device, such as a computer or a server, that runs blockchain client software and connects to the network. Nodes help maintain the security, stability, and decentralization of a blockchain by performing key functions.

Introduction​

Angular continues to be a dominant force in front-end development, with a vast community of over 94,000 developers worldwide. However, with each new version, developers face the crucial decision of whether to upgrade.

Angular 17, released in February 2022, makes a compelling case for upgrading with a strong emphasis on performance enhancements. Studies reveal that a 1-second delay in page load time can lead to a 7% drop in conversions. To combat this, Angular 17 introduces features like deferrable views, promising significantly improved perceived performance. This article explores the exciting new features of Angular 17, the benefits of upgrading, and whether it’s the right move for your project.

DeepSeek-R1 is a powerful language model that you can run on your local machine using Ollama, which simplifies downloading, running, and interacting with LLMs. This guide will walk you through setting up DeepSeek-R1 and making API calls to use it in your applications.

Why Run DeepSeek-R1 Locally?​

Running DeepSeek-R1 on your own system provides several benefits:
✅ Privacy & Security – Your data stays on your device.
✅ Faster Responses – No network latency from API calls.
✅ Offline Access – Work without an internet connection.
✅ No API Costs – Avoid paying for cloud-based LLM services.
✅ Customization – Fine-tune and modify model settings as needed.

Form validation is crucial for ensuring data integrity and a smooth user experience. In Next.js, we can validate forms using various approaches. This guide explores two methods: React Hook Form with Zod (Recommended) and Manual Validation. Both approaches include real-world examples with proper error message handling.

1️⃣ Using React Hook Form with Zod (Recommended)​

Why use React Hook Form?​

✅ Lightweight and optimized for performance
✅ Handles form validation efficiently
✅ Easily integrates with schema validation libraries like Zod

Passing data between components in React is an essential part of building applications. Depending on your app's complexity and the relationship between components, React provides multiple strategies for sharing data effectively. This article will explain the best practices for passing data in React with detailed examples and use cases.

1. Parent to Child: Using Props​

The most common way to pass data in React is from a parent component to a child component using props. Props are read-only and provide a straightforward way to pass data down the component tree.

Docker is a powerful platform that allows you to easily develop, package, and deploy applications in containers. Containers are lightweight, portable, and provide a consistent environment for running applications. Installing Docker on Ubuntu 24.04 is a straightforward process, but it requires a few steps to set up correctly.

In this article, we will walk you through the complete process of installing Docker on Ubuntu 24.04. We will also provide troubleshooting tips and post-installation instructions.

In this guide, we will walk you through the process of running RabbitMQ inside a Docker container. RabbitMQ is an open-source message broker software that facilitates communication between services, ensuring that messages are sent and received reliably. Docker, a popular containerization platform, allows you to easily set up RabbitMQ in an isolated environment with minimal setup.

RabbitMQ is a powerful and flexible messaging broker that enables communication between services in a decoupled manner. In a microservices architecture, RabbitMQ plays a vital role in ensuring that different services can interact and exchange data asynchronously. NestJS, a progressive Node.js framework, provides excellent support for building scalable microservices, including RabbitMQ integration.

In this article, we’ll walk through how to integrate RabbitMQ in a NestJS application, including both sending and receiving messages. We’ll also explore a real-world example where RabbitMQ is used to process tasks asynchronously.

Securing a Linux server is a continuous process that goes beyond just installation and basic setup. Linux servers, while powerful and flexible, are not immune to various types of cyber threats like brute-force login attempts, malware, misconfigurations, and other vulnerabilities. This comprehensive guide will walk you through essential security steps to harden your Linux server, with detailed explanations and practical examples for each step. Let’s secure your Linux server!