Toptal Engineering Blog

The Toptal Engineering Blog is a hub for in-depth development tutorials and new technology announcements created by professional software engineers in the Toptal network.

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Creating React Apps With Redux Toolkit and RTK Query

by Gurami Dagundaridze

Have you ever wanted to use Redux with features like React Query provides? Now you can, by using the Redux Toolkit and its latest addition: RTK Query. This article demonstrates how RTK Query is used in real-life scenarios, complete with detailed code examples.

18 minute readContinue Reading
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Graph Data Science With Python/NetworkX

by Federico Albanese

Data inundates us like never before—how can we hope to analyze it? Graphs (networks, not bar graphs) provide an elegant approach. Find out how to start with the Python NetworkX library to describe, visualize, and analyze "graph theory" datasets.

9 minute readContinue Reading
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Using Express.js Routes for Promise-based Error Handling

by Vitaly Senko

Maintainable Express.js code after scaling means making common code more feature-rich while reducing boilerplate. Find out how to enable promise-based route code and centralize both error handling and normal-results handling in Express.js apps.

8 minute readContinue Reading
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The Best React State Management Tools for Enterprise Applications

by Teimur Gasanov

State management in React has been a hotly debated topic for years, yet little attention seems to be paid to enterprise-level applications and their specific requirements. Let’s take a closer look and compare three of the most popular state management tools available today.

9 minute readContinue Reading
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SSH Logging and Session Management Using AWS SSM

by Vimal Paliwal

A comprehensive tutorial on how to log SSH activity—minus sensitive input, like passwords—occurring in Linux AWS EC2 instances to either CloudWatch Logs or S3 buckets.

11 minute readContinue Reading
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The Importance of Written Communication for Engineering Teams

by Stephanie Emma Pfeffer

While good engineering managers can code, great ones can also communicate. Written communication is integral to the management and scaling of engineering teams, says Juan Pablo Buritica, who has led several successful teams of engineers.

6 minute readContinue Reading
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How to Approach Writing an Interpreter From Scratch

by Sakib Hadžiavdić

How source code becomes a running program is often opaque: "Just run the compiler" is all that developers normally need to know. Writing an interpreter from scratch—including its lexer and parser—is an illuminating challenge.

14 minute readContinue Reading
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Visual Regression Testing with Cypress: A Pragmatic Approach

by Rafael Anachoreta

Visual regression testing is not a new concept. Toptal engineers routinely use it, but with looming deadlines, they sometimes need to innovate and improvise. This article demonstrates how Toptal QA specialists leveraged UI testing and Cypress to run visual regression tests without resorting to specialized tools.

7 minute readContinue Reading

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