Technology

Cloud architects with the AWS Certified Solutions Architect - Associate qualification are in high demand, with good reason—the AWS exam sets the bar high. What’s the best way to prepare for it?

Tests should keep apps from being flaky. But tests themselves can become flaky—even the most straightforward ones. Here’s how we dove into a problematic test on a PostgreSQL-backed Rails app, and what we uncovered.

Supervised learning is the key to computer vision and deep learning. However, what happens when you don’t have access to large, human-labeled datasets?

In this article, Toptal Computer Vision Developer Urwa Muaz demonstrates the potential of semi-supervised image classification using unlabeled datasets.

Inspired by stale-while-revalidate cache control logic, modern sites implement stale-while-refresh logic on the UI side. Thankfully, React Hooks make this logic painlessly reusable across components.

The main artifact of all your work is most likely plain text files. So why don’t you use Notepad to create them? Find out how the Language Server Protocol can transform text editors into code editors, without coupling.

Shopping online is more convenient than ever, so how do you create an online marketplace tailored to cater to your specific needs?

In this article, Toptal JavaScript Developer Konrad Gadzinowski explores marketplace business models and payment methods for both regional and global services.

Internet privacy’s cutting-edge technology includes encrypted server name indication (ESNI) and encrypted DNS in the form of DNS over HTTPS (DoH). Find out what they are, why they exist, and how they work.

Markov Chain Monte Carlo (MCMC) methods let us compute samples from a distribution even though we can’t do this relying on traditional methods.

In this article, Toptal Data Scientist Divyanshu Kalra will introduce you to Bayesian methods and Metropolis-Hastings, demonstrating their potential in the field of probabilistic programming.

With all building blocks in place, it is time to wrap up our WebVR journey and demonstrate how everything is implemented.

In the last part of our WebVR series, Toptal Full-stack Developer Michael Cole goes over design and implementation in detail, explaining how the experience comes together.

Migrating in either direction between Microsoft SQL Server and Oracle Database? Code migration tools, public synonyms, and change management are important to keep in mind.

In a React/Webpack development scenario, there are myriad options to choose from. It’s worth exploring some advanced techniques when it comes to TypeScript, CSS, web workers, and service workers.

Unlock the mysteries of the canvas component for your own visualizations. We have completed the simulation math, and now it’s time for some creative play.

In Part 4 of our WebVR series, we use the canvas element to make three rapid iterations to visualize the gravitational orbits of the planets in our simulation.

A property wrapper is a generic structure that encapsulates read and write access to the property and adds additional behavior to it. We use it if we need to constrain the available property values, add extra logic to the read/write access (like using databases or user defaults), or add some additional methods.

In this article, Toptal Freelance iOS Developer Alexander Gaidukov demonstrates Swift 5.1’s new @propertyWrapper annotation—a more elegant solution.

What if you could incorporate clever features from other programming languages for your JavaScript project, without too much hassle? That is the general idea behind WebAssembly.

In Part 3 of our WebVR series, Toptal Full-stack Developer Michael Cole introduces you to WebAssembly and AssemblyScript, outlining how they can be harnessed to create a browser-backend for web apps.

WebVR is bringing virtual reality to our browsers, but how do we make sure we have enough computing power to deliver a good experience? How do we make the most of multi-core, hyperthreaded processors?

In part two of our series, Toptal Full-stack Developer Michael Cole explains the basics of browser edge computing and the role of web workers.

The quietly growing number of serious Haxe projects have something new to contend with: the first major compiler release in over three years. What does Haxe 4 bring to the table?