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Toptal Blog

The Toptal Blog is the top hub for developers, designers, finance experts, executives, and entrepreneurs, featuring key technology updates, tutorials, freelancer resources, and management insights.

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From the Ground Up: How I Built the Developer's Dream Keyboard

by László Monda

Going from a software background, knowing nothing about electronics, to designing and building a powerful, marketable hardware device is an interesting and fascinating experience. In this article, I'll describe the design of how this electronic masterpiece works.

11 minute readContinue Reading
EngineeringIcon ChevronData Science and Databases

Blockchain Technology Explained: Powering Bitcoin

by Nermin Hajdarbegovic

Bitcoin blockchain is the backbone of the network and provides a tamper-proof data structure, providing a shared public ledger open to all. This article provides insight in blockchain technology, current status and its potential.

6 minute readContinue Reading
EngineeringIcon ChevronData Science and Databases

Context Aware Applications and Complex Event Processing Architecture

by Rahul Devaskar

Since almost all smartphones today are equipped with location sensors, motion sensors, bluetooth, and wifi, today's mobile apps can use context awareness to dramatically increase their capabilities and value. This article walks you through building a context aware app that employs complex event processing.

9 minute readContinue Reading
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A Tutorial for Reverse Engineering Your Software's Private API: Hacking Your Couch

by Nikolay Derkach

Reverse engineering and hacking are usually related to malicious activities that result in sleepless nights of engineers responsible for system maintenance. Reverse engineering is a tool that we can utilize to find the flaws and improve our software in many aspects. This article shows us how to use these techniques to learn more about different implementations of web API.

14 minute readContinue Reading
EngineeringIcon ChevronWeb front-end

React.js View State Management Tutorial

by Leonardo Andrés Garcia Crespo

One of the biggest and most common problems in front-end web development is state management. A developer is constantly focused on keeping the state object in sync with its view and the DOM representation. Users can interact with the application in many ways and it's a big task to provide a clean transition from one view state to another. We will see how using React JavaScript library can help us reduce application complexity and offload UI transitions from our application.

10 minute readContinue Reading
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The Publish-Subscribe Pattern on Rails: An Implementation Tutorial

by Ahmed AbdelHalim

The publish-subscribe pattern] (or pub/sub, for short) is a messaging pattern where senders of messages (publishers), do not program the messages to be sent directly to specific receivers (subscribers). Instead, the programmer "publishes" messages (events), without any knowledge of any subscribers there may be. This article provides insight in how to use the pub/sub pattern, in Rails, to communicate messages between different system components without these components knowing anything about each other's identity.

8 minute readContinue Reading
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Building Real-Time, Multi-Platform Mobile Applications: Examples Using Ionic Framework and Firebase

by Avinash Kaza

This article provides step by step guide for building hybrid multi-platform real-time mobile application using the Ionic Framework and the Firebase.

10 minute readContinue Reading
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A Map to Perfection: Using D3.js to Make Beautiful Web Maps

by Tomislav Bacinger

Data Driven Documents, or D3.js, is an awesome data visualization library. In this article, I'll discuss one particularly compelling application of D3.js: map making. We'll go through the common challenges of building a useful and informative web map, and show how in each case, D3.js gives you everything you need to make your map look and feel beautiful.

6 minute readContinue Reading
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One Size Fits Some: A Guide to Responsive Web Design Image Solutions

by Kado Damball

As mobile and tablet devices come closer to achieving final world domination, web technology is in a race to accommodate the ever-growing number screen sizes. However, devising tools to meet the challenges of this phenomenon brings a whole new set of problems, with one of the latest buzzwords to emerge being "responsive web".

7 minute readContinue Reading

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