Novidades e notas técnicas da Renix, publicadas primeiro na nossa página do LinkedIn.
🚀 PostgreSQL cheat sheet you’ll actually want to save. Whether you’re debugging a query, designing a schema, or trying to remember that one JOIN syntax… this is your quick reference. 🧠⚡ 🐘 SQL & querying 🔍 Filtering & joins 📊 Aggregations 🧩 Subqueries & CTEs ⚡ Indexes & performance 🛠️ Useful…
This TypeScript Cheat Sheet covers the essentials you need to write safer, scalable, and more maintainable applications. ⚡ 📌 Types & Interfaces 📌 Generics 📌 Utility Types 📌 Classes & Modules 📌 Advanced TypeScript Patterns Perfect for developers building modern web applications with confidence. 🚀…
In 2026, data breaches are a CTO's worst nightmare. Here is how we bake enterprise-grade security into every line of code. 🛡️ For businesses operating in Europe, data privacy isn't just a technical preference—it’s a strict legal mandate. Navigating GDPR compliance and protecting sensitive user…
This JavaScript Array Methods Cheat Sheet gives you a quick reference to the methods you'll use every day—from map() and filter() to reduce(), find(), sort(), and more. ⚡ 💡 Write cleaner code 💡 Manipulate data faster 💡 Boost your JavaScript skills 💡 Ace coding interviews Bookmark it and keep it…
When a business scales, its software should accelerate that growth—not hold it back. Yet, we see countless companies trapped in tangled, monolithic systems where updating one simple feature accidentally breaks three others. The cost of technical debt in these systems eventually paralyzes the…
Master GitHub Actions with this all-in-one cheat sheet ⚡ Learn workflows, triggers, jobs, runners, secrets, matrices, deployments, artifacts, and more—all in one place. ✅ Automate builds ✅ Run tests automatically ✅ Deploy with confidence ✅ Improve CI/CD workflows Save this post for later and level…
Scaling a digital product isn't just about adding more servers. It’s about having a foundational architecture that can handle high concurrency without bottlenecking at the database level. For CTOs and founders, downtime during a major traffic surge is the ultimate nightmare—it costs revenue…
append(), extend(), insert(), pop(), sort()… Python lists are simple, but remembering every method can be surprisingly annoying. 😅 This Python List Methods Cheat Sheet puts the essential methods, syntax, examples, results, time complexity, and common patterns in one place. 💡 ✨ Perfect for: 👨💻…
Startups die waiting for the perfect product. ⏳ Here is how we help ambitious founders launch high-performance MVPs in record time. 🚀 In the B2B and SaaS space, speed to market is everything. But there is a dangerous misconception that building a product quickly means sacrificing quality and…
Python comes with a powerful collection of built-in functions that can make your code shorter, cleaner, and more efficient. This Python Built-in Functions Cheat Sheet covers essential functions for type conversion, collections, iteration, mathematics, objects, I/O, debugging, and more—all in one…
Building an in-house tech team in Europe takes months and costs a premium. ⏳ But what if you could cut overhead by 40% without losing a single drop of code quality? 💧 Finding reliable, high-performing software engineers in today's market is a slow and expensive challenge for many SaaS companies…
Web server, reverse proxy, load balancer, caching, HTTPS… NGINX can handle it all. 🔥 This NGINX Cheat Sheet brings the essential commands and configurations together—from basic setup and reverse proxying to SSL/TLS, load balancing, caching, security headers, and troubleshooting. 💻 ✨ Perfect for…
Repositories, branches, pull requests, Actions, releases… GitHub has become much more than a place to store code. This GitHub Cheat Sheet covers the essential workflows for repositories, cloning, branches, commits, remotes, pull requests, GitHub Actions, Gists, authentication, and more. 💻✨ 🔥…
GET, POST, PUT, PATCH, DELETE… Do you know when to use each one? 🤔 This REST API Cheat Sheet brings the essential concepts together—from HTTP methods and status codes to request/response structure, authentication, query parameters, CRUD operations, and API best practices. 💡 ✨ Perfect for: 👨💻…
If you work with APIs or web applications, HTTP status codes are part of your everyday life. But remembering all of them? 😅 This HTTP Status Codes Cheat Sheet puts the most important codes in one place—from 1xx informational responses to 2xx success, 3xx redirects, 4xx client errors, and 5xx…
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SELECT, JOIN, GROUP BY, WHERE... SQL has a lot to remember. 😅 This SQL Cheat Sheet brings the most important SQL concepts and queries into one quick reference—from filtering and joins to aggregation, subqueries, table operations, and data modification. 📊 ✨ Perfect for: 👨💻 Backend Developers 📊…
How many clicks could you eliminate from your daily coding workflow? 🤔 This VS Code Shortcuts Cheat Sheet covers essential shortcuts for editing, navigation, search, multi-cursor editing, debugging, file management, terminal, and Git. 🔥 ✨ Perfect for: 👨💻 Software Developers 🎓 Computer Science…
Still searching for that Bash command every time you open the terminal? 😅 This Bash Cheat Sheet brings the essentials together—from file navigation and permissions to processes, pipes, variables, loops, functions, and scripting. 🧑💻 ✨ Perfect for: 🐧 Linux Users ⚙️ DevOps Engineers 🖥️ System…
Ready to build modern, fast, and high-performance user interfaces for global products? 🌍 We’re growing our engineering team and looking for: 👨💻 3 Junior Frontend Developers 🛠 Tech Stack & Requirements Core & Frameworks: React.js, Next.js, TypeScript, JavaScript (ES6+), HTML5, CSS3 Styling & UI…
Ready to build scalable, high-performance backend systems for global products? 🌍 We’re growing our engineering team and looking for: 👨💻 1 Senior Backend Developer 👨💻 2 Junior Backend Developers 🛠 Tech Stack 🐍 Python + FastAPI 🐘 PostgreSQL ⚡ Redis 🔄 Celery 🐳 Docker 🌿 Git + GitHub ☁️ Cloud & CI/CD…
Tired of remembering Docker Compose commands every time you spin up a project? This Docker Compose Cheat Sheet brings together the essential commands for managing services, containers, volumes, networks, logs, builds, and configuration—all in one quick reference. 💡 ✨ Perfect for: 👨💻 Full-Stack…
Managing containers at scale doesn't have to mean memorizing hundreds of commands. This Kubernetes (kubectl) Cheat Sheet includes the most important commands for pods, deployments, services, namespaces, ConfigMaps, debugging, scaling, and much more. 💡 ✨ Perfect for: 👨💻 Backend Developers ☁️…
Connecting to servers, transferring files, creating SSH keys, or setting up port forwarding? There's an SSH command for everything. This SSH Cheat Sheet covers the essential commands for secure remote access, key management, SCP, tunneling, SSH config, and troubleshooting—all in one place. 💡 ✨…
If you work with APIs, servers, or automation, curl is one of the most powerful tools you can have in your toolkit. This curl Cheat Sheet includes the most common commands for HTTP requests, authentication, headers, file uploads, downloads, debugging, and much more. 💡 ✨ Perfect for: 👨💻 Backend…
Whether you're managing servers, writing scripts, or navigating the command line, knowing the right Linux commands can save you hours. This Linux Commands Cheat Sheet covers the essential commands for files, processes, networking, permissions, package management, and much more—all in one place. 💡…
Installing packages, managing dependencies, upgrading libraries... pip is at the heart of almost every Python project. This pip Cheat Sheet brings together the most useful commands you'll need—from installing packages and managing virtual environments to troubleshooting and dependency management.…
Installing packages, running scripts, managing dependencies... there's a command for everything! 🤓 This npm Cheat Sheet covers the most useful commands for installing packages, managing dependencies, running scripts, publishing packages, and troubleshooting your projects. 💡 ✨ Perfect for: 👨💻…
Tired of searching for Git commands every time you need them? 🤔 This Git Cheat Sheet brings together the most commonly used commands in one place—from initializing repositories to branching, merging, stashing, and resolving conflicts. 💡 ✨ Perfect for: 👨💻 Developers 🎓 Computer Science Students 🛠️…
Stop forgetting Docker commands during development! 🤯 This Docker Cheat Sheet includes the essential commands for working with images, containers, volumes, networks, Docker Compose, and more—all in one easy reference. 💡 ✨ Perfect for: 👨💻 Developers ☁️ DevOps Engineers ⚡ Backend Developers 🎓…
Outdated architectures, slow databases, and clunky apps kill growth. At Renix DEV, we turn tech bottlenecks into high-performance digital products. Custom SaaS, scalable mobile apps, and rock-solid enterprise systems—built for speed, security, and scale. Stop patching the past. Build the future…
To build high-performance digital products that truly scale, an engineering team must dedicate its full cognitive capacity, deep architectural focus, and meticulous quality assurance to a selective handful of projects. When an agency overcommits, code quality degrades, technical debt accumulates…
We recently inherited a high-traffic web platform struggling with an elusive bottleneck: every hour, database query latency spiked by 400%, forcing server memory consumption to its absolute limits. The immediate corporate assumption was a lack of hardware capacity. However, throwing more cloud…
As an organization grows, unstructured data—contracts, documentation, and operational records—scatters across disjointed channels. When teams spend hours locating critical corporate intelligence, operational velocity stalls, and severe compliance risks increase. Resolving operational chaos at…
When a growing business relies on off-the-shelf software, it isn't scaling its operations; it is adapting its growth to someone else's structural limits. In the early stages of an enterprise, generic, pre-built software solutions are often a convenient stopgap. They offer low upfront costs and…
Your website is not just a digital brochure; it is your primary engine for business conversion. If it has been over three years since your last major technical overhaul, it is highly likely that your site is actively turning away qualified prospects before they even contact your sales team. In a…
For modern enterprises and ambitious startups, relying exclusively on transactional sales models introduces high operational volatility. This is why Software-as-a-Service (SaaS) has fundamentally redefined global business economics. By shifting from a traditional ownership model to a value-driven…
Your application isn't slow because your servers are weak. It is slow because your database architecture is failing under load. When a digital platform experiences rapid growth, a flawed data model acts as an immediate bottleneck. What worked seamlessly for a few hundred concurrent users will…
The single greatest risk in any complex software project isn't bad code—it is poor communication and a lack of transparency. Many business leaders have experienced the frustration of handing an idea over to an engineering team, only to enter a black box of development where progress is opaque and…
Choosing between a cross-platform framework and native mobile development is one of the most critical architectural decisions a non-technical founder or product leader will face. While hybrid frameworks often promise a faster initial time-to-market with a unified codebase, they frequently…
In the global tech landscape, the gap between a brilliant digital concept and a scalable, high-performance product is often where most businesses stumble. Transitioning from a visionary roadmap to secure, production-ready code requires more than just programming skills—it demands rigorous software…
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The biggest trap non-tech founders fall into? The endless planning phase. You spend months white boarding, interviewing freelancers, and arguing over databases... and you still haven't talked to a single customer. I’m a non-tech founder too. But I partnered with a ruthless, brilliant tech team…