# Blog - Éderson Fernandes ## Posts - [How to Use Jev in Claude Code, OpenCode and Codex](https://blog.edersonfernandes.com.br/how-to-use-jev-claude-code-opencode-codex/): If you run Claude Code, Codex, or OpenCode every day, you already know the pattern. Your agent burns a full model call to decide something small: is this test flaky, is this log line an error, does this PR do what the title says. That is expensive and slow for a task that is really just a yes/no answer. This is where Jev comes in. In this guide, I will show you how to use Jev in Claude Code, OpenCode and Codex, what problem it actually solves, and where it does not make sense. I have used Claude Code and Codex […] - [.NET 10: The New Features That Actually Matter](https://blog.edersonfernandes.com.br/dotnet-10-new-features/): If you work with .NET every day, you already know a new major version ships every November. Most of the time, the release notes are long and half of it does not apply to your project. This article is different. I went through .NET 10, the new Long Term Support (LTS) release, and picked the changes that actually affect how you write and run code in production: C# 14, file-based apps, ASP.NET Core updates, EF Core 10, and the runtime performance work behind all of it. Quick Answer: What Is New in .NET 10? .NET 10 is a Long Term Support […] - [A, An, The: Simple Rules for English Beginners](https://blog.edersonfernandes.com.br/a-an-the-rules-for-beginners/): If you are learning English, you have probably asked yourself: when do I use a, when do I use an, and when do I use the? These three small words are called articles, and they appear in almost every English sentence. Getting them right is one of the first big steps toward sounding natural. This guide explains the a an the rules in simple language, with examples you can use right away. Quick Answer Use a before a consonant sound, use an before a vowel sound, and use the when both speaker and listener already know which thing you mean. Use […] - [Redis Caching Guide: How and When to Use It in Production](https://blog.edersonfernandes.com.br/redis-caching-guide-dotnet-nodejs/): If you build APIs, you will hit a database performance wall sooner or later. The usual fix is Redis caching. Redis is an in-memory data store that sits in front of your database and answers repeated reads in under a millisecond instead of tens of milliseconds. In this guide, I will show you what Redis actually does, how to add caching to a .NET or Node.js API, which mistakes to avoid, and when Redis is not the right tool at all. Quick answer: Redis caching means storing frequently read data in memory, using a key-value store like Redis, instead of hitting […] - [How to Solve a Rubik's Cube: The Step-by-Step Guide Nobody Told You About](https://blog.edersonfernandes.com.br/how-to-solve-rubiks-cube/): Solving a Rubik’s Cube comes down to following 8 repeatable steps: form the white cross, complete the white face, solve the middle layer, build the yellow cross, orient the yellow face, position the corners, and finish the edges. Each step uses simple algorithms, no memorization genius required. Wait – You’ve Been Thinking About This All Wrong You’ve probably stared at a scrambled Rubik’s Cube and thought: “There’s no way a normal person figures this out.” And honestly? You’re not completely wrong. Randomly turning faces hoping to solve it is nearly impossible, the cube has over 43 quintillion possible combinations, with only […] - [What Nobody Told You About Git Worktree: Work on Multiple Branchs Without Losing Your Mind](https://blog.edersonfernandes.com.br/git-worktree/): Quick summary: git worktree lets you have multiple working directories linked to the same repository, each on a different branch. That means: no git stash, no lost context, no cloning the repo multiple times. In this guide, you’ll learn everything about git worktree with practical examples and real use cases. Introduction: The Problem Every Dev Has Lived Through You’re in the middle of a complex feature. The code is half-done, tests are failing, and suddenly: “I need an urgent hotfix on main.” What do you do? If you’ve been through this, know that there’s a native Git solution few developers are […] - [Why The Martian Is the Book You Didn't Know You Needed](https://blog.edersonfernandes.com.br/the-martian-book-review/): What if you woke up alone on Mars with no way to call for help, limited food, and zero chance of rescue for over four years? Most people would give up. Mark Watney is not most people. The Martian by Andy Weir is the kind of The Martian book review that is hard to write without spoilers, because every chapter drops something incredible on your lap. It is a story about problem-solving under impossible conditions, and it hooks you from the very first page. Context: Why Does This Book Matter and Who Is It For? Published in 2011 as a self-published […] - [Claude Code: The AI Tool That's Quietly Changing How Developers Write Code](https://blog.edersonfernandes.com.br/claude-code/): If you’ve been building software for more than a few years, you’ve probably heard every flavor of “this tool will change how you code.” Most of the time, it doesn’t. But Claude Code is different, and the developers quietly using it every day already know why. This isn’t just autocomplete on steroids. Claude Code is a full agentic CLI assistant that reads your codebase, understands context, and takes real actions. And once you try it, going back feels like using a flip phone. What Is Claude Code? Claude Code is an AI-powered command-line tool developed by Anthropic. Unlike browser-based AI assistants, […] - [Junie CLI: JetBrains' AI Agent for the Terminal | 2026 Guide](https://blog.edersonfernandes.com.br/junie-cli/): Have you ever imagined having an AI agent that understands your entire project, runs tests, handles refactoring, and works straight from the terminal — without opening a heavy IDE? That’s exactly what JetBrains’ Junie CLI promises. And from what we’ve seen in the Beta version launched in March 2026, the promise is real. If you’re a developer keeping up with the AI coding agent wars — Claude Code, Codex, Gemini CLI, Cursor — you need to know about Junie CLI. It arrived with a different approach: being LLM-agnostic, running in any environment, and deeply integrating with JetBrains IDEs. In this complete […] - [What Nobody Told You About .NET Aspire - The Tool That's Changing How Devs Build Cloud Apps](https://blog.edersonfernandes.com.br/dot-net-aspire/): .NET Aspire is an opinionated, cloud-ready stack introduced by Microsoft to simplify the development of distributed, observable, and production-ready .NET applications. It provides a set of NuGet packages, project templates, and tooling that help you orchestrate services, manage configurations, and integrate observability out of the box, without the usual boilerplate nightmare. Introduction: Are You Still Doing This the Hard Way? If you’ve ever spent an entire afternoon configuring Docker Compose, wiring up health checks, setting environment variables for 5 microservices, and then realizing your local setup still doesn’t match production, you’re not alone. That’s exactly the pain point .NET Aspire was built to solve. Announced […] - [Graveyard Keeper - Walkthrough - Part 12 - The Ending Explained and Opening the Portal](https://blog.edersonfernandes.com.br/graveyard-keeper-walkthrough-part-12-the-ending-explained-and-opening-the-portal/): This part is the grand finale of the game, where you act as the mediator to resolve the emotional and familial conflicts of the main NPCs, each representing one of the Seven Deadly Sins. Summary The goal is to collect all the unique artifacts granted after resolving these quests to activate the Portal on Witch Hill, fulfilling your journey to return to your love. Progress Checkpoint Key Action What You Unlock Gold Marble Statues Craft 3x Gold Engraved Marble Pieces Cathedral requirement Aristocrat Document Buy for 12 Gold Coins Proof of noble status Rat Quest Deliver Golden Apple + Dark Heart […] - [Graveyard Keeper - Walkthrough - Part 11 - The Damascene Sword and the Supreme Prayer](https://blog.edersonfernandes.com.br/graveyard-keeper-walkthrough-part-11-the-damascene-sword-and-the-supreme-prayer/): In this part, you finally conclude the Rat’s mission to unlock the path to the deepest levels of the Dungeon (levels 11 to 15). The main focus is the acquisition of the powerful Damascene Sword and the item it unlocks. Summary In parallel, we will set up your game for the endgame definitively, learning how to make the Gold Combined Prayer (which guarantees Faith and Money) and assembling a maximum quality automated farm. Progress Checkpoint Key Action What You Unlock Damascene Sword Buy from Cefos (West Forest at night) Best weapon in the game Dungeon Level 10 Clear Levels 1–10 Access […] - [Graveyard Keeper - Walkthrough - Part 10 - Merchant's Store, Speed Potions, and the Dark Organ Hunt](https://blog.edersonfernandes.com.br/graveyard-keeper-walkthrough-part-10-merchants-store-speed-potions-and-the-dark-organ-hunt/): This episode is all about transitioning from small-time gravedigger to a full-blown entrepreneur! We focus on creating a massive passive income stream by establishing the Merchant’s Store, which will be your primary source of Gold Coins. Summary We also unlock the Speed Potion for a permanent movement speed increase and wrap up the preparation phase by hitting two major quality milestones: upgrading the Church to 50 Quality and the Cemetery to 200 Quality. Finally, you’ll start the Inquisitor’s main quest to hunt down bizarre Dark Organs. Progress Checkpoint Key Action What You Unlock Permanent Speed Craft or buy Speed Potions Permanent […] - [Graveyard Keeper - Walkthrough - Part 9 - The Zombie Revolution and the Golden Kitchen](https://blog.edersonfernandes.com.br/graveyard-keeper-walkthrough-part-9-the-zombie-revolution-and-the-golden-kitchen/): This episode is all about Automation. You will learn how to create Zombies from scratch to put them to work in the quarry, mine, and forest, guaranteeing infinite resources without lifting a finger. Summary We will also focus on two crucial goals to advance the story: completing the delivery of five Golden Quality Dinners for the Merchant and delivering the ten Golden Quality Beers and five Hamburgers for the Inquisitor, securing a large amount of Silver coins. Progress Checkpoint Key Action What You Unlock Zombie Creation Craft Zombie Juice and unlock Resurrection Table Ability to resurrect and control Zombies Morgue Optimization […] - [Graveyard Keeper - Walkthrough - Part 8 - Silver, Skulls, and Family Secrets](https://blog.edersonfernandes.com.br/graveyard-keeper-walkthrough-part-8-silver-skulls-and-family-secrets/): What’s up, Gravedigger! If Part 7 was about laying the groundwork, Part 8 is about the payoff and the grind. We are finally going to make real money, set up the Rat’s horrifying ritual space, and solve the confusing family drama that’s been blocking half the main story. Get ready to move some serious resources! Summary This episode is all about high-level resource management and political maneuvering. You will: Progress Checkpoint Key Action What You Unlock Inquisitor’s Feast Accept Gold Star Beer and Burger requirements Progress toward Inquisitor’s final event Great Church Pay 20 Silver and expand the Church Cathedral quest […] - [Graveyard Keeper - Walkthrough - Part 7 - Wine, Faith, and Trading Royal Stamps!](https://blog.edersonfernandes.com.br/graveyard-keeper-walkthrough-part-7-wine-faith-and-trading-royal-stamps/): Welcome back, Gravedigger! If Part 6 was about unlocking new abilities (Alchemy and Fishing), Part 7 is about turning those unlocks into political power and royal connections. We’re finally going to deliver that medicine, start the critical Wine Quest for the Inquisitor, and begin the long, gruesome grind for the Rat’s underground ritual. This is where the game’s main storyline really starts moving! Summary This part focuses on activating the major Royal NPC quests that have been blocked, using the items and technology unlocked previously. You will: Progress Checkpoint Key Action What You Unlock Merchant Approval Deliver Spices (Remedy) to the […] - [Graveyard Keeper – Walkthrough – Part 6 – Unlocking Alchemy, Fishing, and the Main Quest Maze!](https://blog.edersonfernandes.com.br/graveyard-keeper-walkthrough-part-6-unlocking-alchemy-fishing-and-the-main-quest-maze/): Welcome back, Gravedigger! Part 6 is a chaotic but critical episode where all the main quest lines start to intersect. We’re finally going to unlock the power of Alchemy (making the Merchant’s medicine!), get our first Fishing Rod, and delve deep into the dark secrets of the Astrologer’s and Rat’s quests. If you’ve been feeling overwhelmed by all the NPCs, this part gives you the keys to start solving their problems… by taking on five more problems! Summary This episode is all about unlocking new mechanisms and gathering crucial items that have been roadblocks for many parts of the game: Progress […] - [Graveyard Keeper - Walkthrough - Part 5 - Blood Rituals, Zombies, and the Human Meat Business!](https://blog.edersonfernandes.com.br/graveyard-keeper-walkthrough-part-5-blood-rituals-zombies-and-the-human-meat-business/): Hello again, Keepers! If Part 4 was about unlocking new zones, Part 5 is about automation, upgrading your combat gear, and deepening your highly questionable relationship with the Rat and his shady associates. We’re going deep into the dungeon, getting our first zombie worker online, and starting a very profitable (and illegal) side hustle! Summary The goal of this part is to gather rare items from the Dungeon to progress the main quest lines, unlock a new prayer to boost NPC relationships, and set up your first automatic resource generator. Progress Checkpoint Key Action What You Unlock Rat/Snake Quest Get Blood […] - [Graveyard Keeper – Walkthrough – Part 4 – Unlocking the Dungeon, Infinite Resources, and the Zombie Era!](https://blog.edersonfernandes.com.br/graveyard-keeper-walkthrough-part-4-unlocking-the-dungeon-infinite-resources-and-the-zombie-era/): Welcome back, fellow Graveyard Keepers! You’ve survived the early grind, and now it’s time to seriously level up your operation. Part 4 is massive—we’re talking about unlocking the dungeon, meeting the creepy guy who kicks off the zombie storyline, getting access to unlimited mining resources, and advancing multiple key NPC quests! Get ready, because this is the turning point where the game starts to get really interesting (and less grindy!). Summary This section of the walkthrough focuses on breaking three major roadblocks: the Rat/Snake quest, the Inquisitor’s quest, and the Astrologer’s quest. Progress Checkpoint Key Action What You Unlock Faith Accumulation […] - [Graveyard Keeper - Walkthrough - Part 3 - Opening the Church and Unlocking Science!](https://blog.edersonfernandes.com.br/graveyard-keeper-walkthrough-part-3-opening-the-church-and-unlocking-science/): Hey there, Gravedigger! Ready for our next big step? Part 3 is a pivotal moment in the game. This is where we finally climb out of the mud and into the church (literally!). If you’ve been struggling with low energy and slow technology unlocks, your problems are about to fade, because we’re unlocking the source of Faith and the rare Blue Points (Science)! Let’s dive into what this phase has in store. Summary This episode marks the transition from a simple gravedigger to a Vicar-Farmer-Scientist. Progress Checkpoint Key Action What You Unlock Open the Church Achieve Cemetery Quality 5 to summon […] - [Graveyard Keeper - Walkthrough - Part 2 - The Swamp, The Farm, and The Witch!](https://blog.edersonfernandes.com.br/graveyard-keeper-walkthrough-part-2-the-swamp-the-farm-and-the-witch/): This section of the guide focuses on farming, morgue upgrades, unlocking the Swamp for infinite Iron Ore, progressing NPC quests, and completing the Astrologer’s first major story requirement. Summary The priority shifts to farming (to feed the donkey) and infrastructure upgrades to handle corpses efficiently. By the end of this section, you will have met nearly all the game’s major NPCs, accessed the Swamp (the source of infinite Iron), and completed the first major quest for the Astrologer to gain access to the church’s secrets. Progress Checkpoint Key Action What You Unlock Start the Farm Claim garden from Manuel, buy seeds, […] - [Node.js Version Manager: Simplifying the Developer's Life](https://blog.edersonfernandes.com.br/gerenciador-de-versoes-node-js-simplificando-a-vida-do-desenvolvedor/): If you develop with Node.js, you’ve probably encountered this problem: one project requires the version 16, another requires version 18, and that legacy one still runs on 14. Now what? Manually reinstall Node.js every time you switch projects? Fortunately, no! In this article we’ll talk about NVM (Node Version Manager), the simple and powerful solution for managing muntiple Node.js versions in the same environment. The Classic Challenges with Node.js 1. Compatibility Each project may depend on a different version of Node.js. As the ecosystem evolves, libraries and frameworks also update their requirements. 2. Switching Projects If you work on multiple projects […] - [Graveyard Keeper - Walkthrough - Part 1 - The First Days and the Calendar!](https://blog.edersonfernandes.com.br/graveyard-keeper-walkthrough-part-1-the-first-days-and-the-calendar/): Welcome to the complete walkthrough of Graveyard Keeper – Part 1, focused on your first in-game days, how to understand the weekly calendar, how to deal with your first corpse, and how to unlock one of the most important items in the whole game: the Teleportstone. This guide is perfect for beginners who want fast progression, avoid early-game mistakes, and understand where to focus their time and stamina. Summary This first part is an intensive introduction to surviving in Graveyard Keeper. The main focus is on understanding the weekly calendar (the most important element in the game!), completing the initial tutorials […] - [Grails Framework: A Complete Guide to Building Modern Web Applications](https://blog.edersonfernandes.com.br/grails-framework-guide/): Grails is a powerful web application framework built on Groovy and Spring Boot that enables rapid development with convention-over-configuration principles. It combines Java ecosystem strength with Ruby on Rails-like productivity, offering developers seamless integration with existing Java libraries while maintaining developer-friendly syntax and accelerated build times. Introduction The Grails framework has emerged as one of the most compelling choices for building modern web applications in the Java ecosystem. If you’re a developer looking to accelerate your development process without sacrificing the robustness of enterprise-grade applications, Grails deserves your attention. This comprehensive guide will walk you through everything you need to know about the […] - [Groovy: A Developer's Guide to JVM Productivity](https://blog.edersonfernandes.com.br/groovy-a-developers-guide-to-jvm-productivity/): If you’re a Java developer looking for a more expressive, concise language that still runs on the JVM, Groovy might be exactly what you need. This dynamic language brings modern programming features to the Java ecosystem while maintaining seamless interoperability with existing Java code. What is Groovy? Groovy is a powerful, optionally typed dynamic language for the JVM that combines the best features from languages like Python, Ruby, and Smalltalk with Java’s robust ecosystem. Released in 2003 and now an Apache project, Groovy compiles to Java bytecode and integrates perfectly with Java libraries and frameworks. What makes Groovy special is its […] - [Spring Boot: Fast-Track Your Java Development](https://blog.edersonfernandes.com.br/spring-boot-fast-track-your-java-development/): If you’ve worked with Java web applications, you know the traditional Spring Framework can be powerful but verbose. Configuration files, XML hell, dependency management nightmares—we’ve all been there. Spring Boot changes the game by removing most of this friction, letting you build production-ready applications in minutes instead of hours. What Makes Spring Boot Different? Spring Boot isn’t a replacement for Spring—it’s an opinionated layer on top of it. Think of it as Spring with batteries included. The framework makes intelligent assumptions about what you need, provides sensible defaults, and gets out of your way when you want to customize things. Key […] - [What Nobody Told You About Design Patterns in .NET and C#: 7 Secrets That Will Revolutionize Your Code](https://blog.edersonfernandes.com.br/design-patterns-dotnet-csharp-complete-guide/): Design patterns in .NET and C# are proven solutions for recurring problems in software development. This guide covers essential patterns like Repository, Factory, Singleton and others, with practical examples you can implement immediately. Learn how to structure cleaner, maintainable, and scalable code using .NET community best practices. Have you ever wondered why some .NET developers can write code that seems like magic, while others struggle with confusing architectures and endless bugs? The answer lies in design patterns in .NET and C#, secrets that separate beginner developers from true software architects. If you’re tired of spaghetti code, hard-to-maintain projects, and wasted hours […] - [Java: A Practical Guide for Modern Development](https://blog.edersonfernandes.com.br/java-a-practical-guide-for-modern-development/): Java remains one of the most popular programming languages worldwide, powering everything from Android apps to enterprise systems. Whether you’re just starting or looking to refresh your knowledge, this guide covers the essentials with practical examples you can use right away. Why Java Still Matters in 2025 Despite newer languages emerging, Java maintains its relevance for several key reasons: Platform Independence: Write once, run anywhere (WORA) isn’t just a slogan—it’s a reality. Java’s bytecode runs on any device with a JVM, making it incredibly versatile. Robust Ecosystem: The Java ecosystem includes powerful frameworks like Spring Boot, build tools like Maven and […] - [Flask: Building Web Applications with Python's Lightweight Framework](https://blog.edersonfernandes.com.br/flask-building-web-applications-with-pythons-lightweight-framework/): Flask has become one of the most popular Python web frameworks, and for good reason. Its simplicity, flexibility, and “micro” philosophy make it an excellent choice for developers who want control over their application architecture without the overhead of larger frameworks. Whether you’re building a quick API, a prototype, or a full-scale web application, Flask gives you the tools you need without forcing decisions on you. What Makes Flask Special? Flask is a WSGI web application framework that follows a minimalist approach. Unlike Django, which comes with everything pre-configured, Flask gives you the essentials and lets you add what you need. […] - [Python: A Practical Guide for Developers](https://blog.edersonfernandes.com.br/python-a-practical-guide-for-developers/): Python has become one of the most popular programming languages in the world, and for good reason. Its clean syntax, extensive libraries, and versatility make it an excellent choice for everything from web development to data science, automation, and machine learning. Whether you’re a seasoned developer or just starting out, Python offers a gentle learning curve without sacrificing power. In this post, we’ll explore Python’s core features, walk through practical examples, and share tips that will help you write better Python code. Why Python Matters Python’s philosophy emphasizes readability and simplicity. The language was designed to let developers express concepts in […] - [Ruby on Rails: A Practical Guide for Modern Web Development](https://blog.edersonfernandes.com.br/ruby-on-rails-a-practical-guide-for-modern-web-development/): Ruby on Rails changed web development when it launched in 2004, and it’s still going strong today. If you’re looking for a framework that lets you build powerful web applications quickly without sacrificing code quality, Rails deserves your attention. Let’s dive into what makes Rails special and get you started with real examples. Why Rails Still Matters in 2025 Rails introduced concepts that became industry standards: Convention over Configuration (CoC), Don’t Repeat Yourself (DRY), and RESTful architecture. While newer frameworks have emerged, Rails continues to power major platforms like GitHub, Shopify, Basecamp, and Airbnb. The framework’s productivity boost comes from its […] - [Mastering FreeSpire.PDF for .NET Core: A Developer's Complete Guide](https://blog.edersonfernandes.com.br/freespire-pdf-dotnet-core-guide/): Working with PDF documents in .NET Core applications can be challenging, especially when you need a reliable solution that doesn’t break the bank. FreeSpire.PDF for .NET Core emerges as a compelling option for developers looking to manipulate PDF files programmatically. This comprehensive guide walks you through everything you need to know about implementing FreeSpire.PDF in your .NET Core projects, including a complete Web API example. What is FreeSpire.PDF for .NET Core? FreeSpire.PDF for .NET Core is a free component library that allows developers to generate, read, write, and manipulate PDF documents within .NET Core applications. Unlike many commercial alternatives, this library provides essential […] - [Ruby: The Developer's Best Friend for Elegant Code](https://blog.edersonfernandes.com.br/ruby-the-developers-best-friend-for-elegant-code/): Ruby is more than just a programming language—it’s a philosophy. Created by Yukihiro Matsumoto (Matz) in the mid-1990s, Ruby was designed with developer happiness in mind. If you’ve ever felt frustrated by verbose syntax or convoluted code structures, Ruby might be exactly what you need. Why Ruby Still Matters in 2025 Despite the constant emergence of new languages, Ruby remains a powerful choice for developers. Its clean syntax, dynamic nature, and strong community make it ideal for startups, web applications, and automation scripts. Ruby on Rails, its most famous framework, powers companies like GitHub, Shopify, and Airbnb. The language’s principle of […] - [Ngrok: Sharing your Localhost with the World](https://blog.edersonfernandes.com.br/ngrok-sharing-your-localhost-with-the-world/): Ever wanted to show your local application to a client or test it on different devices without deploying? Ngrok is the perfect tool for this. It creates secure tunnels that make your localhost accessible from anywhere on the internet. What is Ngrok? Ngrok is a widely-used tool for creating secure links that let you share your local applications on the internet. It’s especially useful for: Core Features Secure Tunnels: Ngrok establishes secure connections using TLS encryption, protecting your data during transmission. Easy Setup: No complicated configurations needed. Ngrok works by running a command-line application. Flexible Deployment: Offers both free and paid plans, […] - [Personal Web Security: A Practical Guide to Protect Your Digital Life](https://blog.edersonfernandes.com.br/personal-web-security-a-practical-guide-to-protect-your-digital-life/): With the rise in cyberattacks, data leaks, and online scams, protecting your digital life has never been more important. Whether you’re a developer or a regular user, understanding the risks and adopting good security practices can make all the difference. In this post, I’ve put together a set of practical tips about passwords, password managers, two-factor authentication (2FA), and protection against malware. It’s a true roadmap to strengthen your personal security on the internet. Study roadmap This content is divided into essential topics: If you follow these practices in your daily life, you’ll be much better prepared against common threats. Passwords: […] - [Overrides in DevTools: How to Modify Files and Responses Directly in the Browser](https://blog.edersonfernandes.com.br/overrides-in-devtools-how-to-modify-files-and-responses-directly-in-the-browser/): Have you ever needed to test a UI with a different API response, change some text on the screen without modifying the source code, or simulate specific behavior? If so, the Chrome DevTools’ Overrides feature might become your new best friend. In this post, I will show you how to use Overrides to edit local application files and even modify API responses — all directly in the browser, without touching the server or the code repository. What is the Overrides feature? Overrides is a Chrome feature that lets you locally override files loaded by a website. This includes JS scripts, HTML, […] - [What is Blockchain and why should you, as a Dev, care?](https://blog.edersonfernandes.com.br/what-is-blockchain-and-why-should-you-as-a-dev-care/): Blockchain technology goes far beyond cryptocurrencies. For those who build systems or enjoy exploring new decentralized solutions, understanding the concept and possibilities of this technology can open doors to innovative projects. So, what exactly is blockchain? Blockchain is a type of distributed and immutable database. Instead of storing data on a central server, it distributes the information across multiple nodes (computers), ensuring transparency, security, and resistance to censorship or fraud. Each set of data (the “block”) is linked to the previous one through encryption, forming a “chain”. Hence the name. Main characteristics Use cases beyond crypto Practical example: a simple smart […] - [Hello, World!](https://blog.edersonfernandes.com.br/hello-world/): After some time thinking, I decided to create this blog to share a bit of my journey as a developer. I’m Éderson Fernandes, and I’ve been working with software development since 2014. Over the years, I’ve learned a lot (and made plenty of mistakes) in all kinds of projects. I’ve always enjoyed exchanging ideas with other devs, and I realized that writing about what we experience in our daily work is a powerful way to learn more – and also help others who are facing the same challenges. Here you’ll find content about development in general – backend, frontend, career, best […] ## Pages - [My Brain Dump](https://blog.edersonfernandes.com.br/my-brain-dump/) - [Newsletter](https://blog.edersonfernandes.com.br/newsletter/): [newsletter] - [Contact](https://blog.edersonfernandes.com.br/contact/): Contact Got an idea, suggestion, or just want to chat? Send a message – I’ll reply as soon as possible. - [About](https://blog.edersonfernandes.com.br/about/): ABOUT About the blog This blog is a space to document experiences, learnings, side projects, and thoughts on career, Web3, micro-SaaS, tech in general… and a bit of coffee too. If you’d like to chat, give feedback, or collaborate on something, feel free to reach out! - [Home](https://blog.edersonfernandes.com.br/): ~/ Search the blog Query posts, tutorials, and hidden knowledge. Blog Highlights Code Career Craft Coffee IF all else fails, console.log() - [Blog](https://blog.edersonfernandes.com.br/blog/) ## Optional - [Agent (MCP protocol)](websites-agents.hostinger.com/blog.edersonfernandes.com.br/mcp) [comment]: # (Generated by Hostinger Tools Plugin)