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How to Convert a PuTTY .ppk Key to an Amazon .pem File on macOS

When working with Amazon Web Services (AWS), you may need to use SSH key pairs to access your instances securely. AWS typically uses .pem key files, while PuTTY, a popular SSH client for Windows, uses .ppk key files. If you’re using macOS and have a PuTTY .ppk key that you want to use with AWS instances, you’ll need to convert...

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A Hands-On Tutorial on @Transient in Spring Boot

Learn about the @Transient annotation in Spring Boot with this beginner-friendly tutorial. We’ll guide you through the concept, usage, and implementation of @Transient in your Spring Boot application. @Transient annotation which allows you to exclude fields from being persisted in your data model. In this tutorial, we will delve into the @Transient annotation in Spring Boot, explaining its purpose and...

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A Comprehensive Guide to Using BCryptPasswordEncoder in Spring Boot

In this tutorial, aimed at Spring Boot beginners with some programming knowledge, you will learn how to use the BCryptPasswordEncoder in a Spring Boot application for secure password hashing and validation. Introduction The BCryptPasswordEncoder in Spring Boot is a powerful tool for securely hashing and validating passwords. In this hands-on tutorial, we will guide you through the process of integrating...

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Spring Boot Around Advice Example: A Step-by-Step Tutorial

In this hands-on tutorial, we’ll explore the concept of Spring Boot Around Advice and provide a detailed example to help you understand how to use it effectively in your Spring Boot applications. This tutorial is designed for developers with some familiarity with programming and development. Introduction Spring Boot provides a powerful aspect-oriented programming (AOP) framework that allows you to apply...

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Exploring Spring Boot ApplicationStartedEvent Example

In this hands-on tutorial, we will dive into the Spring Boot ApplicationStartedEvent example to understand how to harness this powerful event in your Spring Boot applications. Whether you’re a seasoned developer or just starting with Spring Boot, this guide will provide you with practical insights into this essential event in the Spring Boot framework. Introduction Spring Boot is renowned for...

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Understanding HTTP Caching for Faster Websites

If you’ve ever wondered how web pages and resources load so quickly when you revisit a website, the answer is often HTTP caching. HTTP caching is a fundamental mechanism that helps improve the performance and efficiency of the World Wide Web. In this beginner’s guide, we’ll explain what HTTP caching is, why it’s important, and how it works. What is...

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Understanding Semver (Semantic Versioning) with Examples

If you’ve ever worked with software, you’ve likely encountered version numbers like 1.2.3 or 2.0.1. These numbers play a crucial role in managing software releases, and they follow a system called Semantic Versioning, or Semver for short. In this blog post, we’ll demystify Semver through illustrative examples, helping you grasp its principles and how it benefits both developers and users....

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Demystifying Docker Networking: A Beginner’s Guide with Examples

Docker has transformed the landscape of application development, deployment, and management. Among its pivotal capabilities is networking, enabling seamless communication not only between containers but also with the external environment. In this blog post, we’ll dive into Docker networking, providing clear explanations and illustrative examples to help you understand this crucial aspect of containerization. Understanding Docker Networking Docker networking is...

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Mastering Docker Volumes: A Comprehensive Guide with Examples

Docker has revolutionized the way we build, ship, and run applications, making it easier to create consistent and reproducible environments. One essential feature that plays a crucial role in this process is Docker volumes. In this blog post, we’ll dive deep into Docker volumes, exploring what they are, why they are important, and how to use them effectively through illustrative...

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Spring Boot Testcontainers Example

In this tutorial, we will create a sample Spring Boot API that uses MongoDB as its database and then demonstrate how to use Testcontainers to write integration tests for the API. Testcontainers is a powerful Java library that allows you to spin up and manage Docker containers during your test runs, making it ideal for testing applications that rely on...

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