Kristiyan Velkov

OpenAI recently transitioned from Next.js to Remix for their ChatGPT interface, catching the attention of developers. This move seems to be driven by Remix’s strengths in client-side rendering and data loading efficiency. Unlike Next.js, which focuses on server-side rendering (SSR), Remix allows OpenAI to optimize the app for faster client-side interactions, relying less on the server and more on pre-fetched data through “loaders.”

Server side rendering and what we learned from PHP.

One powerful tool introduced for React Server Components is the cache function, which helps you cache the results of computations or data fetching, avoiding redundant operations.

These features enable developers to handle complex routing scenarios efficiently, ensuring that users are directed to the correct resources seamlessly

Developers spend a significant amount of time on projects before they push commits. It is a nightmare for the developers who have just landed on the codebase. At first glance, it may be hard to understand how all the files are working together without knowing some more context.

Ok, let’s talk about JavaScript, the most popular and most hated web "language," but wait, how many people really use JavaScript, the language created by Brendan Eich in 1995? Before, 29 years ago!

What are SMART Goals?
SMART goals are designed to provide clarity, focus, and motivation. They are structured in a way that leaves little room for ambiguity, making it easier to track progress and stay committed.

In today’s digital era, where user experience is paramount, ensuring your web application is optimized for speed and performance is crucial. One significant factor affecting web performance is image loading times. Poorly optimized images can drastically slow down your site, leading to higher bounce rates and frustrated users.

In recent years, the rapid advancement of artificial intelligence (AI) has brought about revolutionary changes across industries. From enhancing productivity in businesses to creating personalized experiences in entertainment and healthcare, AI’s influence is ubiquitous and growing. However, this surge in AI capabilities also brings with it a host of significant risks and ethical concerns.

A lot of React JS developers made the mistake of putting memo() everywhere, without purpose. For that reason, the React JS team realizes they made a mistake by adding the option to memory of your components and functions.

Here are some Tailwind classes I wish I had known earlier that have made my development process more efficient and my designs more polished.

Ok, enough drama about AI, and that will replace a lot of programming roles. What will replace you will be a person who knows how to use AI to be more productive, yep person!

Effective code commenting is an art that balances informative details with conciseness. In TypeScript and JavaScript, where projects can scale quickly and become complex, maintaining clear and helpful comments is crucial.

In a world obsessed with the quest for motivation, we often find ourselves waiting for that elusive spark to ignite our productivity and propel us forward. The truth, however, is far simpler and more powerful: discipline

In the quest for productivity and efficient time management, to-do lists often emerge as the go-to solution. In fact, for a significant number of people, they might do more harm than good.

In the evolving landscape of JavaScript frameworks, the mechanisms for fetching and managing data play a crucial role in defining a framework’s usability and efficiency. Next.js and Nuxt.js, two leading frameworks for building server-side rendered applications with React and Vue.js respectively, both offer robust solutions for data fetching.

Both Angular and Wiz are used by thousands of engineers and thousands of apps inside of Google.

The React team is preparing a big release that will include several notable changes that will transform the way web developers create applications

In the rapidly evolving landscape of technology and cloud computing, Nvidia, a company once synonymous with graphics processing units (GPUs) for gaming, is now making a monumental shift towards becoming a powerhouse in artificial intelligence (AI) and cloud services. This transition not only signifies Nvidia’s strategic pivot but also positions it as a potential contender to become the next Amazon Web Services (AWS), the current leader in cloud computing.

Tech company Cognition introduces Devin, the world’s first AI software engineer capable of coding, creating websites and software through a single prompt, designed to work alongside human engineers.

In the world of programming, every team member holds a treasure trove of untapped potential. As a team leader or fellow programmer, it’s your mission to uncover these hidden gems and help everyone shine. Here’s a simple guide to finding and nurturing the potential in your developers, making your team stronger and more innovative.

In React, when rendering lists or collections of elements, it’s common to use a key prop for each item to help React efficiently update and re-render components. However, a common mistake many beginners make is using array indexes as keys. In this blog post, we'll explore why using indexes as keys in React is not a good idea, and we'll provide a simple example to illustrate the issues that can arise.

React JS top questions for the senior Front-end developers — Advanced features, performance optimization, security, hooks, context, patterns, testing, and ecosystem.

The Problem with Pixels
Everything displayed on a screen comprises pixels. But why does using pixels for measurement pose a problem?
Websites are viewed on a variety of screens, each differing in size, orientation, zoom levels, and pixel geometries. What looks perfect on one screen might be distorted on another.

Guides that show readers how to apply healthy and productive behaviors.

Tailwind CSS, a utility-first CSS framework, has gained immense popularity for its approach to styling. It allows developers to rapidly style HTML by applying utility classes directly in the markup. The @apply directive in Tailwind CSS extends this functionality, enabling developers to apply utility classes within CSS files. This directive helps in creating custom classes based on Tailwind’s utility classes, offering a balance between inline styling and traditional CSS.

A crucial concept that bolsters efficiency in coding is the “Don’t Repeat Yourself” (DRY) principle. This article explores the DRY principle within React JS, focusing on TypeScript, to guide you in writing cleaner, more efficient code.

React JS is a popular library but more and more rely on the framework Next.js.

Do you remember when was the last stable release of React JS?
Don’t worry it’s normal to forget because was so far away — June, 2022!

Explore the idea that while we chase material success, the true key to fulfillment and achievement lies within — our mindset. You will find in this blog post my formula to be positive and a list of books that will help you on your journey in life. ❤

Guide for success and progress in the IT industry.

Amidst the challenges of handling CSS in this monumental task, the Feacebook (Meta) team encountered issues that many large projects and companies face. The myriad options, such as build-time vs run-time, CSS vs CSS in JavaScript, and the choice of utility-first systems like Tailwind, presented complex decisions.

Navigating the Rendering Landscape: When to Use Client-Side and Server-Side Rendering In Next.js

In this blog post, we’ll unravel the nuances of CommonJS and ES Modules, shedding light on their differences and helping you navigate the intricacies of JavaScript’s module systems.

Master the way to test your application to different levels.

In the dynamic world of JavaScript development, a solid understanding of asynchronous operations is crucial, especially when it comes to handling multiple promises concurrently. Two powerful tools in a developer’s toolkit are Promise.all and Promise.allSettled. In this blog post, we will delve into the intricacies of these methods, exploring their differences and use cases, to equip senior developers with the knowledge needed to excel in interviews.

The Angular Team has unveiled Angular 17, showcasing an impressive array of additions and enhancements. Could this mark the resurgence of Angular’s popularity? Only time will tell in the coming months. Meanwhile, let’s delve into one particularly noteworthy feature that has captured my admiration in the latest updates: the new built-in for loop.

Angular 17, a powerful front-end framework, introduces intuitive template control flow blocks that simplify the way developers handle conditional rendering and iterative tasks. In this post, we’ll dive into three essential blocks: @if, @else, and @for.

In the world of TypeScript, developers often come across various utility types that help simplify complex type transformations. One such utility type that has gained significant attention is Awaited<Type>. This utility type plays a crucial role in handling promises and provides a convenient way to work with asynchronous code.

Turbopack (BETA)
Turbopack is a Rust-based engine that boosts your local development like never before.

5,000 tests passing for App & Pages Router
53% faster local server startup
94% faster code updates with Fast Refresh
Once they hit 100% of tests passing, Turbopack will be stable in an upcoming minor release.

HTML (HyperText Markup Language) is the backbone of the web, empowering us to create websites and web applications. While most of us are familiar with common HTML elements like <div>, <p>, and <a>, there's a whole world of lesser-known HTML elements waiting to be discovered.

As a developer, you spend a significant portion of your day at your desk, immersed in code and debugging challenges. While your computer is your primary tool, it’s not the only thing that can impact your work environment. The addition of a few well-chosen plants can do wonders for your desk, enhancing both your productivity and well-being.

Unlocking Advanced Techniques and Best Practices for TypeScript Mastery.

SSG (Static Site Generator) and SSR (Server-Side Rendering) are two different approaches to web development, and each has its own advantages and use cases. Let’s explore the differences between them

One of the key features of TypeScript is its ability to define custom types and interfaces many developers often find themself wondering which one to use in different situations. In this blog post, we will explore the differences between TypeScript types and Interfaces and provide examples to help you make informed decisions.

In the world of artificial intelligence, the continuous evolution of technology is reshaping the way we interact with AI systems. ChatGPT, a powerful language model developed by OpenAI, has made significant strides in recent years

Procrastination — the age-old nemesis of productivity. We’ve all been there, putting off important tasks until the last minute, only to experience stress and regret. But fear not! In this blog post, we’ll unravel the mysteries of procrastination and arm you with practical strategies to conquer it. Say goodbye to delay and hello to a more productive, fulfilling life.

Whether you’re a complete beginner to the language or have been developing with JavaScript for a while, there’s something for everyone here. Without any further ado, let’s jump in.

Symbols are a unique data type introduced in ECMAScript 6 (ES6) to represent a primitive value that is both immutable and unique.

Creating a Visual Studio Code theme involves working with JSON files to define the colors and styles for various syntax elements. Here’s a step-by-step guide on how to create a custom VS Code theme using code

The performance of JavaScript can be a bottleneck, especially when it comes to running server-side code. That’s where Bun, one of the fastest JavaScript runtimes, comes into play.

Leadership and mentoring are both important roles in guiding and developing individuals or teams. While there isn’t a one-size-fits-all approach, here are some of my general rules for effective leadership and mentoring.

Composite is a structural design pattern that lets you compose objects into tree structures and then work with these structures as if they were individual objects.

Redux, a predictable state management library for JavaScript applications, gained widespread popularity in the React ecosystem in recent years. However, the landscape of front-end development is constantly evolving, and developers often wonder if Redux is still a viable choice in 2023. In this blog post, we’ll explore the current state of Redux, assess its relevance, and consider alternative state management solutions.

Bridging the gap between designers and developers is often a challenging task, but tools like Figma have been revolutionizing this process. Figma’s Developer Mode

Composite is a structural design pattern that lets you compose objects into tree structures and then work with these structures as if they were individual objects.

Building a following on Medium can be a challenging task, especially for newcomers

In the constantly evolving realm of front-end frameworks, React JS has solidified its position as a dominant force, empowering developers to effortlessly create captivating and interactive user interfaces.

The Bridge is a structural design pattern that separates an object’s abstraction from its implementation so that they can vary independently.

Proven techniques to optimize your workflow as a developer

Security headers are HTTP response headers that web servers can send to enhance the security of web applications. These headers provide instructions to the web browser on how to handle certain aspects of the page and its interactions.

SOLID principles are five design principles that help us keep our application reusable, maintainable, scalable, and loosely coupled.

AI, or Artificial Intelligence, refers to the simulation of human intelligence in machines that are programmed to perform tasks that typically require human intelligence. AI systems are designed to perceive their environment, reason and learn from the available data, and make decisions or take actions to achieve specific goals.

In computer programming, a naming convention is a set of rules for choosing the character sequence to be used for identifiers that denote variables, types, functions, and other entities in source code and documentation.

Practice of protecting web applications from various security threats and vulnerabilities. It involves implementing security measures and controls to ensure the confidentiality, integrity, and availability of web applications and the data they handle.

6 strong points to use Vite for your new React JS project.

🚀 🛎 „Да бъдеш лидер е отговорност и на първо място означава да бъдеш човек. За мен границата между това да бъдеш добър лидер и просто мениджър е отношението спрямо хората и спрямо работата.“ споделя Кристиян Велков, Мениджър програмисти в GfK.

🤩🤩🔝🔝 В уебинара "Лидерството в #TECH Индустрията – Черно на Бяло" се включва Kristiyan Velkov, Мениджър на Frontend програмисти в GfK. Кристиян е юрист по образование, но истинската му страст е програмирането.
Имаш въпроси към него? Искаш да разбереш повече за кариерния му път и добрите практики?

😍 🚀 Кристиян Велков e мениджър на Front-еnd екип в GfK. Има юридическо образование, интересува се от финанси, мениджмънт и не спира да учи програмиране. Голямата му страст към компютрите започва още в ранно детство. В 8 клас прави първия си сайт и през целия му процес на обучение в университета този интерес не спира. Във втори курс започва работа като Front-еnd програмист. Вярва, че правото и програмирането са му помогнали да бъде по-добър лидер.